Energy can be transformed in to: Mechanical Electrical Thermal Light Sound

Transcription

1 Energy and Force Study Guide CBA 2 STANDARD 5.6A Explore the uses of energy, including mechanical, light, thermal, electrical, and sound energy 5.6B demonstrate that the flow of electricity in circuits requires a complete path through which an electric current can pass and can produce light, heat, and sound Energy can be transformed in to: Mechanical Electrical Thermal Light Sound SWITCH (Battery) NOTES Complete Circuit Incomplete Circuit Know the difference between a complete and incomplete circuit

2 5.6C demonstrate that light travels in a straight line until it strikes an object or travels through one medium to another and demonstrate that light can be reflected such as the use of mirrors or other shiny surfaces and refracted such as the appearance of an object when observed through water Series Circuit (left): Only one path for current to flow through If path were broken, the current stops Parallel Circuit (right): Two or more paths for current to flow through Current can flow through both or either branches If path were broken, the other device keeps working REFLECTION REFRACTION 5.6D design an experiment that tests the effect of force on an object

3 Word Bank: Use the following words to complete the crossword puzzle. Magnetism Load Insulator Prism Circuit Gravity Mechanical Source Straight Friction Spring Scale Medium Light Across 1. The force that pulls of iron, nickel or cobalt 3. Scale that measures the amount of force applied to an object 6. Examples of this use of energy include spinning, chasing and sewing 8. Transparent, triangular refraction tool that creates rainbows Down 2. The movement which light travels before it strikes a medium 4. The force applied when brakes rub together 5. A property of matter which retains heat 6. The object light strikes as it travels 7. The object requiring energy within a circuit

4 MONDAY, NOVEMBER 7 1. Students conducted an investigation in which they measured the distance a toy car traveled after rolling down a ramp covered with sand paper or wax paper. Write a question that the students could answer by analyzing the results of their investigation. (Hint: what are they trying to figure out? Draw a diagram if it helps you to think through what they did.) 2. Complete the table with examples of each type of energy. Energy Source (energy required to function) ENERGY IS CONVERTED INTO Energy Output (What is produced) Mechanical Electrical Light Thermal Sound 3. Which surface would behave most like a mirror? A. A smooth wall painted light gray B. A shiny piece of metal C. A black rod D. A piece of glossy white paper

5 TUESDAY, NOVEMBER 8 4. A periscope is used to see objects behind or under something. Look at the diagram below. What do you think happens with the light and the object in order to see the object at a different angle? Answer in a complete sentence. (Wordbank: refraction, reflection, bounce, break) 5. Some students constructed a battery-powered circuit like the one below. Which of the following best explains why the light bulb would not light up? A. The circuit requires a different type of battery B. The circuit needs more power than available C. The switch in the circuit is missing D. The circuit is incomplete 6. While watching the World Series baseball game Steven sees and hears the action and hears the cheers of the crowd. Explain the energy transformation that is happening to allow him to enjoy the game?

6 WEDNESDAY, NOVEMBER 9 7. A boy took his dog for a walk. The dog saw a rabbit and decided to chase it. The dog drug the boy until he got tired and stopped. What can be said about the dog s force in comparison to the boy s force while the dog was chasing the rabbit? (word bank: smaller, greater, force, gravity, friction, pull, push) 8. Which two tools would be most useful in testing how the mass of an object would affect the distance it moves after being pushed? Draw and label the two tools. 9. A student observed that salt dissolves faster in hot water than in cold water. What type of energy is the student investigating? THURSDAY, NOVEMBER The table shows some different forms of energy and some ways they are used. Fill in the missing piece.

7 11. Will is using a microscope to examine the shape of salt crystals. What allows the lenses of the microscope to magnify the image Will sees? A. The lenses reflect the light passing through B. The lenses bend the light passing through C. The lenses absorb all of the light passing through D. The lenses allow the light to pass through with no change 12. Which of the following items material would not make a complete circuit? A. Tire B. Body (shell) of a car C. Buckle of seatbelt D. Metal spoon FRIDAY, NOVEMBER A student put together the following circuit. They noticed the load did not produce light energy. Write a C-E-R that explains why the circuit will not work. Claim (Answer to the question): Evidence (What does your data show): Reasoning (Why does your evidence support your claim):

8 14. A science class wanted to know if a golf ball and table tennis ball would roll the same distance after rolling down a ramp. Draw a diagram showing a fair test of this idea. Include in your diagram: 2 ramps, a golf ball, a table tennis ball, 2 meter sticks. Then explain what would be measured.