1. Conservation of Energy
PASS Review
Multiple choice questions
Standards: 6_

2. 1. Which energy transformations BEST illustrates why people can walk?
Chemical energy is converted into light energy.
Chemical energy is converted into thermal energy.
Chemical energy is converted into mechanical energy.
Chemical energy is converted into more chemical energy.

3. 2. The Main source of energy for our planet is/are…
The earth’s core
The sun
Greenhouse gases
Cosmic radiation

4. 3. In all food webs, what is the ultimate source of energy?
The decomposers
The consumers
The producers
The sun

5. 4. As a roller coaster goes downhill……
Kinetic energy is converted into potential energy
Potential energy is converted into kinetic energy
Electrical energy is converted into potential energy
Potential energy is converted into electrical energy

6. 5. What form of energy flows through a copper wire connecting the two ends of battery?
Heat energy
Electrical energy
Chemical energy
Potential energy

7. The puddle was heated by fire.
6. Thomas is playing in a puddle of water in his driveway. The water felt warm when Thomas reached down to touch it. Which statement describes why this puddle of water is warm?
The puddle was heated by fire.
The heat moved from the driveway to the puddle.
Energy from the sun warmed the puddle of water.
Friction from standing in the puddle warmed the water.

8. Holding them above your head
7. Olivia made a chart about ways to produce heat. Which of these BEST completes the chart?
Material
Method
wood
burning
hands ?
Waving them
Separating them
Rubbing them together
Holding them above your head

9. Solar energy Nuclear energy Chemical energy Potential energy
8. As shown in the diagram, winds are formed from the sun's uneven heating of the earth's atmosphere. The wind patterns are altered by bodies of water, different landforms, and plant cover. Because of this, the wind is considered a form of ______________.
Solar energy
Nuclear energy
Chemical energy
Potential energy

10. Water Iron nail Wooden stake Plastic tube
9. Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails?
Water
Iron nail
Wooden stake
Plastic tube

11. They are all sources of fuel They are all sources of electricity
10. A nuclear power plant, a hydroelectric dam, a coal burning power plant have what in common?
They are all sources of fuel
They are all sources of electricity
The are all sources of natural resources
The all turn solar energy into electrical energy

12. The head of a matchstick A stretched out rubber band
11. One type of potential energy is chemical energy. This is energy stored up that is released during a chemical reaction. An example of this type of energy is _________
A powerful spring
The head of a matchstick
A stretched out rubber band
Being at the top of a roller coaster

13. 12. Usable chemical energy in food begins as __________ energy.
Heat
Sound
Light
mechanical

14. 13. Why might an electromagnet be used to pick up old cars in junk yards?
Electromagnets are inexpensive and easily create revenue
Electromagnets are powerful and are easily turned on and off
Electromagnets are easy to operate and can be run by cheap labor
Electromagnets can pick up any thing in a scrap yard.

15. 14. What is the Law of Conservation of Energy?

16. 15. In this electric motor, an electric current causes the coil to rotate, changing
Mechanical energy into electrical energy
Electrical energy to magnetic energy
Potential energy to electrical energy
Electrical energy to mechanical energy

17. 16. A battery uses _________________ energy to generate _______________ energy
Electrical, mechanical
Chemical, mechanical
Electrical, chemical
Chemical, electrical

18. Heat and mechanical Sound and light Light and electrical
17. The stored chemical energy in fuels is MOST OFTEN converted to _________ and _________ energy through combustion.
Heat and mechanical
Sound and light
Light and electrical
Electricity and sound

19. 18. The driving force behind the water cycle and how and why water changes phase is the________
Weather on Earth
Earth’s Atmosphere
The sun’s energy
Heat within earth’s core

20. 19. All of the following use an electric motor, EXCEPT ___________________
Radio
Fan
Blender
Hair dryer

21. 20. You hands get warm by a fire because__________ energy is converted into heat energy.
Chemical
Electrical
Mechanical
Nuclear

22. 21. A generator converts mechanical energy into _____________________ energy.
Chemical
Light
Electrical
sound

23. 22. In this circuit, what part would be the energy source?
Wire
Switch
Battery
Light bulb

24. 23. What type of energy transformation takes place in an Electric Motor? 24. What type of energy transformation takes place in a generator?

25. 25. Which natural resource can be burned to produce heat?
Granite
Water
Soil
coal

26. Use a screw instead of a nail Use two batteries instead of one
26. Brady connected the lose wire to the battery and created an electromagnet. He picked up 45 thumb tacks with his electromagnet, though his goal was to pick up 50 thumb tacks. What could Brady do to increase the strength of his electromagnet and pick up more thumbtacks?
Use fewer coils of wire
Use a screw instead of a nail
Use two batteries instead of one
Replace the nail with a piece of steel

27. Motor Circuit Generator Amplifier
27. In most electric power plants, magnets are moved through a coil of wire. This causes current to flow through the wire. The equipment that does this is called a _______________.
Motor
Circuit
Generator
Amplifier

28. 28. Chemical energy is converted to electrical energy in a____________________.
Pendulum
Generator
Battery
Light bulb

29. 29. What part of a circuit conducts electricity?
Switch
bulb
Battery
Wire

30. 30. According to the law of conservation of energy,
An object loses most of its energy a friction.
The total amount of energy in a system stays the same.
The potential energy is always greater than its kinetic energy.
The kinetic energy in an object is always greater than its potential energy.

31. 31. A solar panel car converts __________ energy into ___________ energy.
Light, chemical
Light, mechanical
Mechanical, light
Electrical, mechanical

32. 32. Which statement best summarizes the law of conservation of energy?
When work is done, energy is lost.
Heat flows from a warm body to a cold body.
If energy disappears in one form then it reappears in another form.
The fewer number of electrons, the least amount of energy.