Download Energy Transformation Test Review

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Period
Date
Energy Transformation Test Review
What is the following describing?
Word bank: chemical energy, electrical energy, energy, energy conversion, heat (thermal) energy,
law of conservation of energy, light (radiant) energy, mechanical energy, nuclear energy, sound
energy.
1. The ability to do work that end up as light, heat, or work on a machine.
energy
2. Energy that moves objects from place to place.
mechanical energy
3. Energy that is released by a chemical reaction.
chemical energy
4. Energy that comes from electrons within atoms.
electrical energy
5. Energy that is associated with vibrations of matter.
sound energy
6. Energy from the motion of atoms and molecules within an object
heat (thermal) energy
7. Energy contained in the nucleus of an atom
nuclear energy
8. Energy that can move through empty space
light (radiant) energy
9. The change of energy from one from to another
energy conversion
10. Energy cannot be created or destroyed
law of conservation of energy
Answer the following questions.
11. Almost all energy on earth can be traced back to the ultimate source of what energy source?
solar energy
12. Make an energy path that shows how energy can get to a light bulb?
There are lots of correct answers including:
sun  water  dam  light bulb
sun  air  wind turbine  light bulb
sun  corn  ethanol plant  light bulb
13. Name some ways that we use energy?
There are lots of correct answers including: we light buildings, propel vehicles, and
communicate messages with energy
14. The purpose of a nuclear power plant is to transform nuclear energy into electricity. This is
done in steps starting with a nuclear reaction which generates heat to produce steam. The
steam in turn is used to turn a generator which finally produces electricity. What is the pathway
the energy takes from nuclear to electrical?
nuclear  thermal  mechanical  electrical
15. What do wind turbines, hydroelectric dams, and most power plants have in common?
All use generators to produce electrical current
16. What has historically been some reasons we use fossil fuels instead of solar power?
There are lots of answers including: fossil fuels are cheaper, we already have the infrastructure
set up for fossil fuels and don’t like to change, etc.
17. What is the type of energy that is in the food we eat, batteries, and in a match?
chemical energy
18. What type of energy is produced and wasted during most energy transformation?
thermal (heat) energy
19. What would be an energy pathway from the sun to a bicycle?
sun  chemical energy stored in food  chemical energy stored in muscles kinetic energy
20. Why aren’t energy conversions 100% efficient?
some of the energy gets converted to less useful forms (like heat) and drifts away
Give 5 examples of everyday items that either use or produce the following types of energy:
Mechanical:
1.
2.
3.
4.
5.
Kick a ball
bicycle
car
drum
arrow
Chemical:
1.
2.
3.
4.
5.
food
wood; coal
battery
gasoline
muscles
Electrical:
1.
2.
3.
4.
5.
Powerplant
battery
lightning
video game
generator
Sound:
1.
2.
3.
4.
5.
Heat/Thermal:
1.
2.
3.
4.
5.
stove
fire
oven
microwave
engine
Nuclear:
drum
speakers
piano
voice
thunder
1. Sun
2. atom bombs
3. stars
4. radioactivity
5. nuclear
power plants
Light/Radiant:
1.
2.
3.
4.
5.
sun
light bulbs
plant
computer
satellites
Potential:
1.
2.
3.
4.
springs
arrows
dams
roller
coasters
5. pendulum