8th Grade. Slide 1 / 38. Slide 2 / 38. Slide 3 / 38. Types of Interactions Study Guide

Transcription

1 Slide 1 / 38 Slide 2 / 38 8th Grade Types of Interactions Study Guide Which of the following is NOT an example of a force being exerted through a field? Slide 3 / 38 Gravity pulling on a falling apple man pushing a car magnet attracting a steel ball n electrically charged balloon pushing on another balloom from across the room

2 1 Which of the following is NOT an example of a force being exerted through a field? Slide 3 () / 38 Gravity pulling on a falling apple man pushing a car magnet attracting a steel ball n electrically charged balloon pushing on another balloom from across the room 2 Unbalanced forces acting on an object will cause it to accelerate (chance velocity). Slide 4 / 38 2 Unbalanced forces acting on an object will cause it to accelerate (chance velocity). Slide 4 () / 38

3 3 The force of gravity as the object's mass decreases. Slide 5 / 38 increases remains constant decreases 3 The force of gravity as the object's mass decreases. Slide 5 () / 38 increases remains constant decreases 4 The force of gravity as the distance between two objects decreases. Slide 6 / 38 Increases Remains onstant ecreases

4 4 The force of gravity as the distance between two objects decreases. Slide 6 () / 38 Increases Remains onstant ecreases 5 The force of gravity decreases at a constant rate as we move away from a planet like Jupiter. Slide 7 / 38 5 The force of gravity decreases at a constant rate as we move away from a planet like Jupiter. Slide 7 () / 38

5 6 s we move away from the Sun, the force of gravity gets weaker by an inverse of: Slide 8 / 38 distance cubed distance distance squared 6 s we move away from the Sun, the force of gravity gets weaker by an inverse of: Slide 8 () / 38 distance cubed distance distance squared 7 What makes a balloon exhibit an overall positive charge? Equal protons and electrons in the object Slide 9 / 38 More electrons than protons in the object More protons than electrons in the object Less electrons in the object

6 7 What makes a balloon exhibit an overall positive charge? Equal protons and electrons in the object Slide 9 () / 38 More electrons than protons in the object More protons than electrons in the object Less electrons in the object 8 What makes an object exhibit a overall negative charge? Slide 10 / 38 equal protons and electrons in the object more electrons than protons in the object more protons than electrons in the object less electrons in the object 8 What makes an object exhibit a overall negative charge? Slide 10 () / 38 equal protons and electrons in the object more electrons than protons in the object more protons than electrons in the object less electrons in the object

7 9 What makes an object exhibit an overall neutral charge? Slide 11 / 38 equal protons and electrons in the object more electrons than protons in the object more protons than electrons in the object less electrons in the object 9 What makes an object exhibit an overall neutral charge? Slide 11 () / 38 equal protons and electrons in the object more electrons than protons in the object more protons than electrons in the object less electrons in the object 10 Opposite charges repel. Slide 12 / 38

8 10 Opposite charges repel. Slide 12 () / Like charges attract. Slide 13 / Like charges attract. Slide 13 () / 38

9 12 s the amount of charge decreases, the electric force between the charges. Slide 14 / 38 decreases remains constant increases 12 s the amount of charge decreases, the electric force between the charges. Slide 14 () / 38 decreases remains constant increases 13 s the amount of distance between charges decreases, the force between the charges. Slide 15 / 38 decreases remains constant increases

10 13 s the amount of distance between charges decreases, the force between the charges. Slide 15 () / 38 decreases remains constant increases 14 Electric field lines exit positive charges and enter negative charges. Slide 16 / Electric field lines exit positive charges and enter negative charges. Slide 16 () / 38

11 15 The electric field strength between two parallel oppositely charged plates: Slide 17 / 38 increases as you move towards the positive plate. decreases as you move towards the negative plate. remains constant at all points between the plates. 15 The electric field strength between two parallel oppositely charged plates: Slide 17 () / 38 increases as you move towards the positive plate. decreases as you move towards the negative plate. remains constant at all points between the plates. 16 William Gilbert was the scientist who discovered that the Earth was a giant magnet. Slide 18 / 38

12 16 William Gilbert was the scientist who discovered that the Earth was a giant magnet. Slide 18 () / Microscopic regions inside iron are called. Slide 19 / 38 magnetic crystals magnetic domains magnetic atoms 17 Microscopic regions inside iron are called. Slide 19 () / 38 magnetic crystals magnetic domains magnetic atoms

13 18 Ferromagnetic substances include: (select all that are ferromagnetic) Slide 20 / 38 iron aluminum nickel cobalt 18 Ferromagnetic substances include: (select all that are ferromagnetic) Slide 20 () / 38 iron aluminum nickel cobalt,, 19 n electromagnet produces a magnetic field when current flows through it. Slide 21 / 38

14 19 n electromagnet produces a magnetic field when current flows through it. Slide 21 () / Soft iron is an example of a(an). Slide 22 / 38 electromagnet temporary magnet permanent magnet superconductor 20 Soft iron is an example of a(an). Slide 22 () / 38 electromagnet temporary magnet permanent magnet superconductor

15 21 Like magnetic poles. Slide 23 / 38 attract repel don't interact 21 Like magnetic poles. Slide 23 () / 38 attract repel don't interact 22 What does this type of field drawing represent? Slide 24 / 38 ttraction Repulsion Suspension

16 22 What does this type of field drawing represent? Slide 24 () / 38 ttraction Repulsion Suspension 23 test compass at will be oriented like: Slide 25 / test compass at will be oriented like: Slide 25 () / 38

17 24 test compass at will orient itself like: Slide 26 / test compass at will orient itself like: Slide 26 () / Magnetic field lines exit from the south pole of a magnet. Slide 27 / 38

18 25 Magnetic field lines exit from the south pole of a magnet. Slide 27 () / s the distance from a magnetic field is increased, the magnetic field intensity will. Slide 28 / 38 increase decrease stay the same 26 s the distance from a magnetic field is increased, the magnetic field intensity will. Slide 28 () / 38 increase decrease stay the same

19 27 Moving electric charges (electric current) causes a magnetic field to form. Slide 29 / Moving electric charges (electric current) causes a magnetic field to form. Slide 29 () / The rule is the rule that relates the direction of a magnetic field surrounding a wire carrying current. Slide 30 / 38 left thumb right hand right arm left hand

20 28 The rule is the rule that relates the direction of a magnetic field surrounding a wire carrying current. Slide 30 () / 38 left thumb right hand right arm left hand 29 The father of modern electromagnetic theory is: Slide 31 / 38 lbert Einstein Sir Isaac Newton Michael Faraday Michael olton 29 The father of modern electromagnetic theory is: Slide 31 () / 38 lbert Einstein Sir Isaac Newton Michael Faraday Michael olton

21 30 The rule is used to determine the direction of the magnetic field around a current carrying coil of wire. Slide 32 / 38 right hand left hand right thumb left thumb 30 The rule is used to determine the direction of the magnetic field around a current carrying coil of wire. Slide 32 () / 38 right hand left hand right thumb left thumb 31 List the three types of fields discussed in this chapter. What factors affect the strength of each type of field? Slide 33 / 38

22 32 How can a) a mass, b) a positive charge, and c) a compass be used as field detectors? Slide 34 / Explain the process of induction. Slide 35 / How do electric field diagrams and magnetic field diagrams compare to each other for attraction/ repulsion? Explain your answer in a short paragraph. Slide 36 / 38

23 35 How is oulomb's Law (forces between charges) similar/different to Newton's Law of Gravitation (forces between masses)? Slide 37 / 38 Similarities ifferences 36 rag and drop the terms below to into the Newton's Law of Gravitation or oulomb's Law. If they are used for both Laws place the term on the line. Slide 38 / 38 Newton's Law of Gravitation oulomb's Law s distance increases force drops Mass ttraction Field harge Repulsion