Volume 1 Student Text

Transcription

1 Page 1 of A Motion Graphs of motion Position vs time 64 position vs. time graph 65 determining speed from the slope of a position vs. time graph 282 position vs. time graph of harmonic motion 15 graphically analyze position, speed, and time data 17 analyze position, velocity, and time graphs 18 create a position vs. time graph 19 graph and analyze data for relationships between position, time, velocity, and acceleration 1.1.B Motion Graphs of motion Velocity vs time 67 speed vs. time graph for constant speed 84 speed vs. time graph for accelerated motion 15 graphically analyze position, speed, and time data 17 analyze position, velocity, and time graphs 85 complex speed vs. time graphs 18 create a speed vs. time graph 87 calculating distance from speed vs. time graph 23 graphically analyze data for acceleration and velocity 282 velocity vs. time graph of harmonic motion 24 compare calculation with graph estimate 1.1.C Motion Graphs of motion Acceleration vs time 65 graphs showing changes in speed 82 calculating acceleration from experiments 85 calculating acceleration from a speed vs. time graph 86 calculate speed in accelerated motion 89 calculate time and distance from acceleration 19 graph and analyze data for relationships between position, time, velocity, and acceleration 23 graphically analyze data for acceleration and velocity 24 model for uniform accelerated motion 26 derive acceleration equation 1.2.A

2 Page 2 of A Motion Problem solving Using graphs (average velocity, instantaneious velocity, acceleration, displacement, change in velocity) 50 constructing a graph 50 constructing a graph 50 graphs are a way of representing data 51 using a graphical model to make a prediction and checking the model's accuracy 58 speed is the rate of change of position 15 graphically analyze position, speed, and time data 17 analyze position, velocity, and time graphs 18 create a position vs. time graph 19 graph and analyze data for relationships between position, time, velocity, and acceleration 64 position vs. time graph 64 average and instantaneous speed 67 speed vs. time graph for constant speed 68 compare and contrast speed and velocity 23 graphically analyze data for acceleration and velocity 24 compare calculation with graph estimate 30 collect and analyze data for quantitative relationship between force, mass, acceleration 84 speed vs. time graph for accelerated motion 85 calculating acceleration from a speed vs. time graph 50 sketch four graphs 78 create a graph of speed vs. position 87 calculating distance from speed vs. time graph 268 understanding graphs of harmonic motion 282 position vs. time graph of harmonic motion 1.2.B

3 Page 3 of B Motion Problem solving Uniform acceleration, including free fall (initial velocity, final velocity, time, displacement, acceleration, average velocity) 24 identify the problem 73 analyzing motion with video and strobe photography 74 Dr. Harold Edgerton and strobe photography 80 acceleration is the rate of change in the speed of an object 21 determine effect of changing velocity on acceleration 23 graphically analyze data for acceleration and velocity 24 uniform acceleration model 25 determine effect of changing mass on acceleration in free fall 81 comparing speed and acceleration 26 derive acceleration equation 82 formula for acceleration 83 zero acceleration vs. constant acceleration vs. acceleration with zero speed 30 collect and analyze data for quantitative relationship between force, mass, acceleration 84 acceleration is total change of speed divided by total change in time 86 calculating the speed of an object that is accelerating 89 solving motion problems with acceleration 90 free fall and acceleration due to gravity 91 motion formulas for free fall 92 solving problems with free fall 106 direction of net force and acceleration and speed 1.3.A

4 Page 4 of A Motion 146 projectiles and trajectories 47 predict exact landing location Projectiles 147 drawing the velocity vector 49 investigate the range of a projectile Independence of horizontal and vertical motion 148 components of the velocity vector 150 constant velocity of horizontal component of projectile motion 50 create and test a model to predict the landing spot of a projectile 151 vertical motion of a projectile 151 analyze a horizontally launched projectile 152 projectiles launched at an angle 163 effects of gravity on motion of a projectile 164 finding x and y components of velocity for model rocket 180 compare projectile motion to orbital motion 1.3.B Motion 146 projectiles and trajectories 25 investigate the effect of gravity Projectiles Problem-solving involving horizontally launched projectiles 147 drawing the velocity vector 148 components of the velocity vector 149 adding velocity vectors 150 independence of horizontal and vertical motion in a velocity vector 47 analyze the motion of a marble in 2 dimensions 49 investigate the range of a projectile 50 create and test a model to predict the landing spot of a projectile 151 analyze a horizontally launched projectile 152 projectiles launched at an angle 153 range of projectiles 163 effects of gravity on motion of a projectile 180 compare projectile motion to orbital motion 187 the motion of a tossed object

5 Page 5 of A Forces, Momentum and Motion 100 Newton's laws of motion 27 collect data on Newton s first law Newton's laws applied to complex problems 101 what systems in a car overcome the law of inertia 102 seat belts and air bags and Newton's first law 103 Newton's discovery of the connection between force and mass and acceleration 105 calculation using Newton's second law 28 explain how Newton s first law applies 29 investigate Newton s second law 30 determine effect of changing mass on force with the Atwood Machine 32 investigate Newton s third law 34 draw free body diagrams and identify action-reaction pairs 106 Newton's second law and dynamics problems 107 force problems 109 explaining Newton's third law in terms of an astronaut moving through space 110 explaining Newton's third law in terms of moving a skateboard 111 solving problems with action-reaction forces 112 examples of Newton's third law in the real world 115 problems using Newton's first law and second law 116 seat belt problem 128 Newton's second law and net force 130 equilibrium and Newton's second law 138 calculate the acceleration of a toy 158 calculating acceleration on a ramp 159 predicting motion in three dimensions and controlling force and acceleration in space missions

6 Page 6 of Newton's first law and rotational inertia 191 Newton's second law applies to rotational motion 193 Newton's second law for rotational motion variables 244 Newton's first law and momentum 246 momentum and Newton's third law 251 momentum form of Newton's second law 274 Newton's second law and natural frequency 447 electric forces always occur in pairs according to Newton's third law 570 Newton's third law and pressure in a fluid 2.2.A Forces, Momentum and Motion Gravitational force and fields 38 weight is a measure of the force of gravity pulling on mass 93 acceleration of gravity does not depend on mass 25 investigate the effect of gravity 60 gravitational field strength 119 calculating weight with mass and gravity 120 gravity and acceleration and weightlessness 150 gravity only accelerates vertical motion 156 resolving force of gravity in ramp coordinates 163 effects of gravity on motion of a projectile 174 description of law of universal gravitation 175 formula and calculations for law of universal gravitation

7 Page 7 of orbital motion 177 satellite motion application 178 HEO and geostationary orbit 180 calculate weight and acceleration due to gravity on Pluto 238 tides are due to force of gravity 265 orbit is a type of cycle 441 differences between electric force and gravity 448 fields and forces 448 gravity is far weaker than electric forces 450 comparison between electric fields and gravitational fields 571 formula for pressure in a liquid caused by gravity 590 understanding how gravity works inside atoms 642 gravitational fields and general relativity 642 Newton's laws and gravity 649 every field has an associated particle 2.3.A Forces, Momentum and Motion 131 the force from a spring 41 investigating Hooke s law Elastic forces 132 Hooke's law and restoring force of a spring 133 solid materials act like springs 566 Hooke's law for solids 42 investigating Hooke s law 221 the stress formula 222 measure tensile strength of a soft material 566 brittleness and elasticity are physical properties of matter 567 thermal stress 2.4.A

8 Page 8 of A Forces, Momentum and Motion Friction force (static and kinetic) 48 effect of friction on motion of a ball on a ramp 94 friction and traction and antilock brakes 37 investigate sliding friction 71 what effect does friction have on mechanical advantage? 122 the force of friction and the different types of friction 80 friction as a source of energy dissipation 123 a model for friction 124 calculating the force of friction 125 friction and motion 126 reducing friction force 127 friction applications 137 friction of a pulled sled 157 frictional force on an inclined plane 158 calculating acceleration on a ramp accounting for friction 164 effects of friction on acceleration 205 friction and mechanical advantage of wheel and axle 206 friction and mechanical advantage of ramps and screws 217 friction can divert some energy 225 how friction affects machines 228 friction and the arrow of time 238 tidal energy represents frictional energy from the Earth-moon system 267 friction causes damping in oscillators 278 friction and steady state 577 fluids and friction 2.5.A

9 Page 9 of A Forces, Momentum and Motion Air resistance and drag 93 air resistance and terminal speed 124 calculating the force of friction 127 friction applications 80 friction as a source of energy dissipation 225 calculate speed of air in homemade airspeed tester 146 effects of friction on trajectories 158 calculating acceleration on a ramp accounting for friction 164 effects of friction on acceleration 267 friction causes damping in oscillators 577 fluids and friction 2.6.A Forces, Momentum and Motion 141 adding vectors 51 investigating force vectors Forces in two dimensions 142 adding vectors 52 calculate force components Adding vector forces 143 adding and subtracting vectors 144 calculating vector components 58 draw a free body diagram and label forces 145 finding magnitude and angle of a vector 154 the force vector describes the strength and direction of a force 155 calculating components of a force vector 208 work done by a force at an angle to the distance 2.6.B Forces, Momentum and Motion Forces in two dimensions Motion down inclines 48 Galileo and Newton conducted experiments with balls on ramps 156 forces on an inclined plane 157 normal force of an inclined plane 28 were any forces acting on the car? 51 investigating force vectors 58 consider forces acting on the car 158 calculate the acceleration of a skier on a slope 208 work done by a force at an angle to the distance 2.6.C

10 Page 10 of C Forces, Momentum and Motion Forces in two dimensions Centripetal forces and circular motion 166 rotation and revolution in circular motion 167 calculating angular speed in radians per second 53 working with radians 56 applications of circular motion 58 investigating centripetal force 168 angular speed of a moving wheel 59 engineering of roller coaster systems 170 patterns of circular motion: centripetal force 171 calculating centripetal force 63 explore rotational equilibrium and net torque 172 using centripetal acceleration to create the feeling of gravity by rotating the space station 173 centrifugal force is actually an example of inertia 176 patterns of circular motion: orbits and satellite motion 177 centripetal force and the law of universal gravitation combine to form the orbit equation 178 HEO and geostationary orbit 180 calculating centripetal force 182 translation and rotation 191 relationship between angular acceleration and linear acceleration 193 angular acceleration of a wheel 2.7.A

11 Page 11 of A Forces, Momentum and Motion Momentum, impulse and conservation of momentum 244 comparison of kinetic energy and momentum 245 momentum formula and calculating momentum 246 law of conservation of momentum 247 conservation of momentum in collisions 248 applying conservation of momentum and defining initial conditions 249 momentum conservation for collisions in two and three dimensions 250 car bodies designed to slowly crumple in an accident 87 calculating momentum 88 explore collisions and prove how they obey the law of conservation of momentum 89 calculate forces due to change in momentum during collisons 90 which ball had a greater change in momentum? 91 investigate angular momentum 92 explain life application of conservation of momentum 251 force on a rocket from change in momentum 252 impulse formula 253 what is angular momentum 254 angular momentum depends on speed and mass and shape 255 formula for angular momentum 256 gyroscopes and the space shuttle 257 jet engines work because of conservation of momentum 258 momentum conservation of turbofan engine 259 why is momentum a vector 260 difference between impact and impulse 261 calculate momentum 392 Einstein's thinking about momentum of particles moving near the speed of light 629 conservation of momentum in nuclear reactions

12 Page 12 of A Energy Gravitational potential energy 209 calculating work done against gravity 213 potential energy comes from gravity 213 the formula for potential energy 221 kinetic and potential energy conversions while bouncing in a trampoline 267 kinetic to potential energy changes in motion of an oscillator 77 relationships between kinetic and potential energy for a marble on a loop track 78 derive minimum release height of marble based on kinetic and potential energy 79 calculating maximum velocity of marble on track from input potential energy 81 calculate potential and kinetic energy 275 harmonic motion involves both potential and kinetic energy 86 potential to kinetic energy conversion in a pendulum 101 potential to kinetic energy conversions of a pendulum 3.2.A Energy 211 energy appears in different forms Energy in springs 212 different forms of energy 213 the formula for potential energy 235 breaking down an energy flow system into processes 275 oscillators exchange energy back and forth between potential and kinetic 3.3.A Energy 392 Einstein's mass-energy formula 238 modeling radioactive decay Nuclear energy 392 the equivalence of energy and matter 239 simulate radioactive decay 592 radioactive isotopes 594 stability of nucleus and balance of protons and neutrons 240 research and evaluate types of radiation 241 research cosmic rays and dosimetry 595 nuclear reactions 612 research radioactive materials 614 three kinds of radioactivity 242 investigating nuclear reactions and energy 243 investigating nuclear reactions and energy 615 alpha and beta and gamma radiation

13 Page 13 of matter and energy and radioactivity 617 half-life 618 power released by radioactive decay 619 radiation as a flow of energy 620 ionizing and nonionizing radiation 621 sources of radiation in the environment 622 x-ray machines 623 CAT scans 624 measuring radiation with Geiger counter 625 nuclear reactions can convert mass into energy 626 source of energy in nuclear reactions 627 energy of fusion reactions 628 energy of fission reactions 629 energy is stored as mass in nuclear reactions 631 nuclear power application 632 nuclear energy 634 comparison of fission and fusion 635 differences between fission and fusion 3.4.A

14 Page 14 of A Energy Work and power 207 how to calculate work 208 work done by a force at an angle to the distance 73 work done on the block is limited by energy stored in the system 74 studying the concept of work 209 work done against gravity 75 relationship between work and energy 210 for all machines work out cannot exceed work in 76 calculating frictional losses of input work in a bicycle 211 relationship between work and energy 83 calculate person s power 213 the symmetry between work and energy 215 deriving the formula for kinetic energy 218 hydroelectric power application 83 calculate work 84 calculate average work and power 167 find the power rating of home appliances 221 concept of work 222 calculate work done 192 calculate the power consumed by the motor 229 power is the rate of doing work or using energy 230 power formulas 231 calculating power for common devices 232 estimating the power in wind 233 estimate average input power of a person 239 research into tidal power 242 calculate energy and power for humans 430 measuring power in watts 431 formula for calculating power in electric circuits 432 electric companies charge for kilowatthours used 434 average power in an electric motor 3.5.A

15 Page 15 of A Energy Conservation of energy 216 the law of conservation of energy 217 conservation of energy in a closed system 77 investigating energy in a system using conservation of energy 78 law of conservation of energy 218 energy transformation hydroelectric plant 219 conservation of energy for Hoover Dam 221 trace the energy transformations from sun to a flashing taillight 80 calculating efficiency of Smart Track ysing KE, PE and law of conservation of energy 81 find the total energy at each position 86 draw an energy flow diagram 225 efficiency and conservation of energy 235 the conversion process of energy flow 88 investigating collisions and conservation of energy 237 energy flows in biological systems 249 kinetic energy conservation for elastic collisions 299 waves propagate by exchanging energy between two forms 378 electromagnetic waves exchange energy between electricity and magnetic parts 473 MRI--energy exchange by a nucleus in a magnetic field 491 energy conservation and Faraday's law 537 thermodynamics and conservation of energy 574 conservation of energy in fluids 575 energy conservation and Bernoulli's equation 629 conservation of energy in nuclear reactions 4.1.A

16 Page 16 of A Waves Wave properties Conservation of energy 284 waves transmit energy 285 waves are a form of traveling energy 294 waves transfer energy through absorption 299 energy of a wave 101 a graphical model of energy in harmonic motion 102 study wave pulses on elastic cord 108 waves carry energy from one place to another 378 electromagnetic waves are oscillations of an energy field 552 energy and radiation relationships 4.1.B Waves 292 waves and reflection 105 observing reflection in water waves Wave properties 293 waves and reflection and boundaries 130 study reflection with a mirror Reflection 296 resonance and reflection 337 light rays bounce off a surface 341 we see mostly reflected light 346 the process of how light is reflected 353 mirrors reflect light 354 specular and diffuse reflection 358 total internal reflection and the critical angle 361 the image formed in a mirror 376 Applying Your Knowledge #1: Research the use of prisms as reflectors 4.1.C

17 Page 17 of C Waves 292 waves and refraction 131 study how refraction works Wave properties 293 waves and refraction and boundaries 132 study index of refraction Refraction 337 light bends as it moves into a material 353 lenses bend light 356 refraction is the bending of light rays 357 refraction depends on index of refraction in both materials 375 explain index of refraction 380 index of refraction is ratio of speed of light in material to speed of light in vacuum 4.1.D Waves 295 sound and light waves and interference 113 interference of sound waves: beats Wave properties Interference 295 constructive and destructive interference 318 interference of sound waves 114 investigate interference with sound waves 143 study light interference 383 interference of light waves and Young's double-slit experiment 395 holograms and the interference of light 4.1.E Waves 292 waves and diffraction 105 investigate diffraction in a ripple tank Wave properties 294 waves and diffraction and boundaries 143 study light diffraction patterns Diffraction 367 diffraction spot size image defect 384 diffraction patterns and the spectrometer 4.2.A

18 Page 18 of A Waves Light phenomena Ray diagrams (propagation of light) 337 light rays bounce off a surface 352 light rays indicate the path light travels 355 drawing a ray diagram 134 investigating the difference between an object and an image 135 trace ray diagrams through a double convex lens 360 optics in terms of objects and images 136 sketch the image formed by a lens 361 finding an image in a ray diagram 138 analyze optical systems 362 converging and diverging lenses 363 focus and focal plane of a lens 364 drawing ray diagrams of lenses 365 ray diagram for a converging lens 366 the functions of an optical system 368 calculating image and object distances for optical systems 369 using image relay to analyze optical systems 371 telescope as an optical system 375 identifying rays from a ray diagram 4.2.B Waves 337 light rays bounce off a surface 130 investigate law of reflection Light phenomena 346 the process of how light is reflected Law of reflection (equal angles) 353 mirrors reflect light 354 the image in a mirror 355 the laws of reflection 358 total internal reflection and the critical angle 361 the image formed in a mirror 374 law of reflection 4.2.C

19 Page 19 of C Waves 357 Snell's law of refraction 131 investigate Snell s law of refraction Light phenomena 362 lenses follow Snell's law of refraction 132 apply Snell s law of refraction Snell's law 376 using Snell's law 4.2.D Waves 367 diffraction spot size image defect 143 study light diffraction patterns Light phenomena 383 Young's double-slit experiment Diffraction patterns 384 diffraction grating 4.2.E Waves Light phenomena Wave-particle duality of light 338 Albert Einstein 344 the photon theory of light 345 photons and the intensity of light 346 when the photon theory of light is useful 126 examine the effects of glow-in-the-dark material 127 photons and quantum theory 128 investigating quantum model of atomic energy levels 603 quantum or photon theory of light 604 matter and energy in quantum theory 605 the meaning of the uncertainty principle 606 quantum theory and probability 607 laser application 608 emission and absorption of photons in laser light 622 x-rays are photons 4.2.F

20 Page 20 of F Waves Light phenomena Visible spectrum and color 338 white light is the combination of all the colors 339 how the human eye sees color 340 the additive color process 341 the subtractive color process 342 visible light has just the right energy for life 4 creating colors digitally 124 investigate RGB and CMYK models of color 144 use a spectrometer to measure wavelength of different colors of light 219 observing the blackbody spectrum 343 the RGB and CMYK color processes are complementary 347 color separations in high quality printing 348 the CMYK four-color printing process 353 prisms separate white light into its colors 359 prisms and dispersion and rainbows 379 relationship between frequency and energy and color of light 381 waves of the electromagnetic spectrum 382 visible light waves 397 relate color to frequency for visible light 554 blackbody spectrum and stars 596 emission/absorption spectrum 5.1.A

21 Page 21 of A Electricity and Magnetism Charging objects (friction, contact and induction) 440 electric charge is a fundamental property of matter 441 observing forces between charges using an electroscope 170 investigate a triboelectric series 171 create an electrophorus 172 applications of electrostatic attraction 442 patterns of electric force: attraction and repulsion 445 static electricity and charge polarization and induction 445 charge by friction 446 relationship of electric force and charge 5.2.A Electricity and Magnetism 446 Coulomb's law 175 investigate Coulomb s law Coulomb's law 447 calculate force using Coulomb's law 460 calculating charge using Coulomb's law 5.3.A

22 Page 22 of A Electricity and Magnetism 404 voltage measures differences in energy 176 investigate how capacitors work Electric fields and electric potential energy 405 voltage is a measure of electric potential energy 181 how are magnetic field lines similar to electric field lines? 406 battery uses chemical energy to produce electrical charge 447 forces between charges 448 fields and forces 449 an electric field exists around a charge 450 deriving units for measuring electric fields 451 electron beam accelerators 452 a capacitor stores charge 453 current into and out of capacitors 455 ability of a capacitor to store charge is capacitance 465 magnets create a magnetic field around them 642 gravitational fields and general relativity 649 every field has an associated particle 5.4.A

23 Page 23 of A Electricity and Magnetism DC circuits Ohm's law 408 relationship between current and resistance 409 measuring resistance 410 Ohm's law 156 Ohm s law 157 derive Ohm s law from experiment 158 use Ohm s law to calculate the resistance 411 the resistance of electrical devices 161 apply Ohm s law to series circuits 418 calculation of voltage from resistance and current 200 use Ohm s law to calculate the resistance of the transistor 421 calculating current in a series circuit using Ohm's law 425 using Ohm's law in parallel circuits 426 using Ohm's law for circuit analysis 428 using a systematic approach to solving circuit problems 429 calculate currents and voltages in a network circuit 438 using Ohm's law to calculate current 5.4.B Electricity and Magnetism 420 series circuit defined 160 investigate series circuits DC circuits 421 current and resistance in a series circuit 161 apply Ohm s law to series circuits Series circuits 422 voltage in a series circuit 162 compare series and parallel circuits 424 advantages of parallel circuits over series circuits 428 comparing series and parallel circuits 436 why series circuits are not used in homes and buildings 437 compare current in a series and parallel circuit 5.4.C

24 Page 24 of C Electricity and Magnetism 420 parallel circuit defined 160 parallel circuit and Ohm s law DC circuits 423 parallel circuits 161 build a parallel circuit Parallel circuits 424 voltage and current in a parallel circuit 162 analyze parallel circuits 425 resistance in parallel circuits 428 comparing series and parallel circuits 436 why parallel circuits are used in homes and buildings 437 compare current in a series and parallel circuit 5.4.D

25 Page 25 of D Electricity and Magnetism DC circuits Mixed circuits 424 advantages of parallel circuits over series circuits 426 using Kirchhoff's voltage law for circuit analysis 150 applications of electric circuits 162 compare series and parallel circuits 164 build and analyze network circuits 427 analyzing a voltage divider circuit 428 using a systematic approach to solving circuit problems 199 understand the uses of transistors in circuits 203 designing and building logic circuits 429 solving network circuits 431 formula for calculating power in electric circuits 434 calculating power for AC circuits using a power factor 435 circuits in your house 437 compare current in a series and parallel circuit 438 calculating resistance in a circuit 453 simple capacitor circuit 506 rectifier circuit converts AC electricity to DC 507 transistors act as electronic switches 508 a transistor amplifier 509 electronic logic and transistor circuits 513 digital logic circuits 515 logic gates and an electronic adding circuit 5.4.E

26 Page 26 of E Electricity and Magnetism 400 electrical energy 152 explore the concept of electric current DC circuits 403 open and closed circuits 153 predict what the current will be Applying conservation of charge and energy (junction and loop rules) 404 current flows through wires and carries energy 410 calculate the current flowing in a circuit 422 Kirchoff's voltage law 162 analyze parallel circuits 162 compare series and parallel circuits 164 build and analyze network circuits 423 Kirchhoff's current law 424 voltage and current in a parallel circuit 425 resistance in parallel circuits 426 using Kirchhoff's current law for circuit analysis 427 analyzing a voltage divider circuit 428 using a systematic approach to solving circuit problems 429 solving network circuits 436 why parallel circuits are used in homes and buildings 437 compare current in a series and parallel circuit 5.5.A

27 Page 27 of A Electricity and Magnetism 462 magnetism explained 179 understanding magnetic fields Magnetic fields and energy 463 comparing magnetic and electric forces 465 understanding magnetic fields 466 electrons and magnetism 181 draw magnetic field lines for a bar magnet 182 test materials to see if they are affected by magnets 467 alignment of domains responds to magnetic fields 468 creating permanent magnets 469 the magnetic field of Earth 184 magnetic field of Earth 185 effect of magnetic field on a compass 186 magnetic field of an electromagnet 470 a compass is a magnet that lines up with Earth's magnetic field 471 the strength of Earth's magnetic field 472 compensating for magnetic declination 473 magnetic field of a nucleus 476 magnetic field between two unlike poles 478 magnetic field of a wire 479 force on a current in a magnetic field 480 the magnetic field of loops and coils 481 the magnetic field of coils and permanent magnets 482 magnetic field strength 483 calculating magnetic fields and forces 497 units of magnetic field 5.6.A

28 Page 28 of A Electricity and Magnetism Electromagnetic interactions 378 electromagnetic waves exchange energy between electricity and magnetic parts 479 force on a current in a magnetic field 484 electromagnets 485 building an electromagnet 486 electric motor uses electromagnets to convert electrical energy to mechanical energy 142 research medical and industrial uses of electromagnetic waves 186 build an electromagnet 187 what happens to the strength of an electromagnet when you increase the current? 193 investigate electromagnetic induction 487 how electromagnets are used in electric motors 488 battery-powered electric motors 489 concept of electromagnetic induction 489 electric generators transform mechanical energy into electric energy 492 generators are source of alternating current 493 transformers operate on electromagnetic induction 494 electromagnet-based maglev 497 diagram of electromagnet 552 electromagnetic radiation