Conservation of Energy PASS Review Multiple choice questions Standards: 6_5.1-5.4

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.

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

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

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

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

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.

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

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

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

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

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

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

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.

14. What is the Law of Conservation of Energy?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.