Name: ___________________________________
Science
Unit 1.3
Study Guide
1. Energy
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2. Kinetic energy
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3. Potential energy
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4. Three forms of potential energy:
a. _______________________________
b. _______________________________
c. _______________________________
5. Five forms kinetic energy:
a. ________________________________
b. ________________________________
c. ________________________________
d. ________________________________
e. ________________________________
6. Thermal energy
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7. When does a bouncing ball have potential energy?
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8. When an archer pulls back a bow string, the bent bow gains _______________________
energy. When the string is released, the potential energy changes to
________________________ energy, which moves the arrow through the air.
9. The kinetic energy that moving objects have is called
________________________________________________________________________
10. Examples of mechanical energy:
a. __________________________________________________________________
b. __________________________________________________________________
c. __________________________________________________________________
d. __________________________________________________________________
11. The law of conservation of energy says that
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12. Electric energy
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13. Electric energy examples:
a. _______________________________
b. _______________________________
c. _______________________________
14. Within an atom, ________________________ have a ____________________________
charge and protons have a _________________________ charge.
15. When an object gains or loses electrons, it has an
_________________________________________________.
16. An object that ________________________electrons has a negative charge. An object
that loses electrons has a _____________________________ charge.
17. Electric force
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18. Electric current
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19. Charged objects have potential energy, sometimes called
________________________________________________________________________
20. Constant electric current is needed to _________________________________________
or run a _________________________________________________________________
21. Sources of electrons:
a. ________________________________
b. ________________________________
c. ________________________________
22. A material that carries electrons easily is a _____________________________________
23. ________________________ are good conductors because
________________________________________________________________________
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24. Examples of good conductors:
a. _________________________________
b. _________________________________
25. An _______________________________________ is any path along which electrons
can flow.
26. Identify Each Type of Circuit
________________________________
_______________________________
27. Insulator
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28. Examples of insulators:
a. _________________________________
b. _________________________________
c. _________________________________
d. _________________________________
29. They are good insulators because
________________________________________________________________________
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30. Materials that resist electric current are called __________________________________
31. ___________________________ are used to generate or produce electricity.
32. __________________________________________ a temporary magnet made by
passing an electric current through a wire coiled around an iron bar.
33. A _____________________________________is a good place to see an electromagnet.
34. Light
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35. Light rays
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36. Reflection
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37. Refraction
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38. Lens____________________________________________________________________
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39. What are light waves called? ________________________________________________
40. What does sound energy need in order to travel? _______________________________
41. What happens to matter as sound energy moves through it?
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42. What determines the pitch of the sound?
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43. What determines the volume, or loudness, of a sound?
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44. How are sound wave carried? ______________________________________________
45. Pitch
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46. Through which kind of matter does sound move the slowest? _____________________
47. Through which kind of matter does sound move the fastest? ______________________
48. What happens to the speed of sound as it moves from water to air?
_______________________________________________________
49. Sound travels through the air as about __________________m/sec. (about 1100 ft/sec.)