Correct Answers are in blue 2nd Nine Weeks Benchmark Study Guide
1. Potential Energy is converted to KINETIC energy and back to POTENTIAL energy.
2. In every energy transformation there are two outcomes: 1. WORK is done and 2.HEAT is given
off.
3. According to the LAW OF CONSERVATION OF ENERGY , energy is never lost.
4. In a battery, CHEMICAL energy is changed to electrical energy.
5. In which substance (solids, liquids, gases) do particles move the slowest? SOLIDS
6. In which substance (solids, liquids, gases) do particles move the fastest? GASES
7. As a substance is cooled the molecules/particles move (faster/slower)? SLOWER
8. By increasing the KINETIC (kinetic / potential) energy of molecules in a substance the
substances temperature will rise.
9. In order for sound to travel it must have a MEDIUM to travel through.
10. Thermal energy is always transferred from the WARMER object to the COOLER object until the two
have the same temperature.
11 – 19. List the form of energy associated with each word or phrase
11. Lightning ELECTRICAL energy
12. Fossil fuels (oil, gas, coal) CHEMICAL energy
13. Battery CHEMICAL energy
14. Shooting a basketball into a hoop MECHANICAL energy
15. The light from a light bulb ELECTROMAGNETIC energy
16. An atomic weapon NUCLEAR energy
17. Heat from a fire THERMAL energy
18. Music coming from the radio SOUND energy 19. A slice of pizza CHEMICAL energy
20. In an internal combustion engine (car engine) the correct order of transfer is CHEMICAL energy
from the gasoline to THERMAL E nergy to MECHANICAL energy in the motion of the car.
21. When producing electricity from fossil fuels, the correct order of energy transformation is
CHEMICAL energy from the coal to MECHANICAL energy turning the turbine, spinning the magnet in
the coil of wire to produce ELECTRICITY .
22. Conduction = the transfer of heat through DIRECT CONTACT
Example: A metal pot gets hot when touching the eye of the stove.
23. Convection = the transfer of heat through LIQUIDS & GASES
Example: A hot air balloon rising.
24. Radiation = the transfer of heat through ELECTROMAGNETIC WAVES
Example: The suns energy to warm Earth.
25-30 List the form of heat transfer associated with each word or phrase
25. Warming your hands above a fire CONVECTION
26. Air Conditioning CONVECTION
27. Using a curling iron to curl your hair CONDUCTION
28. Burning your hand on the stove CONDUCTION
29. A cat lying in front of a fire RADIATION
30. Water boiling CONVECTION