Chapter 7 Review JEOPARDY!

1. Chapter 7 Review JEOPARDY! Electromagnetic Waves & Light

2. Round 1 Round 2

3. N-ergy– 10 points • Energy that is transferred as waves with both electrical and magnetic properties is called _______________ ________. • Electromagnetic energy Next Question

4. N-ergy– 20 points • In a vacuum, all electromagnetic waves have the same ________. • Speed Next Question

5. N-ergy– 30 points • Waves that transfer up-and-down vibrations (with crests and troughs) are called _____ waves. • Transverse Next Question

6. N-ergy– 40 points • Electromagnetic waves are different from mechanical waves because they can… • Travel in a vacuum (do not need a medium) Next Question

7. N-ergy– 50 points • Light is _____________ when it passes from one medium into another at an angle. • Refracted (causing it to bend) Next Question

8. Which Wave is That?– 10 points • Chemicals used to give color to materials are called __________. • pigments Next Question

9. Which Wave is That?– 20 points • The EM waves found between visible light and x-rays on the spectrum are _________. • ultraviolet Next Question

10. Which Wave is That?– 30 points • The wavelengths of the em spectrum that are associated with heat and fall just before visible light in the spectrum. • Infrared Next Question

11. Which Wave is That?– 40 points • Radar uses reflected ____________ to measure speed. • microwaves Next Question

12. Which Wave is That?– 50 points • The EM waves with the highest frequency (and therefore the highest energy) are _______ • Gamma rays Next Question

13. What We See – 10 points • A wave is really just a disturbance that transfers ___________ from place to place. • energy Next Question

14. What we See – 20 points • Rate the phases of matter in order from where sound travels fastest to where sound travels slowest. • Solids, liquids, gases Next Question

15. What We See – 30 points • The frequency of a wave is measured in units called ________ • Hertz (Hz) Next Question

16. What We See– 40 points • The color a red apple will appear if you shine blue light on it is ________. • Black (there will be no red wavelengths to reflect off the apple and back to your eye… the blue wavelength gets absorbed by the apple) Next Question

17. What We See– 50 points • The color you will see if you look at your blue t-shirt through a red filter is ______. • Black (blue cannot pass through the red filter, so your eye does not receive any wavelengths of color and shirt looks black) Next Question

18. Wave Tricks– 10 points • How high or low a sound seems to a person is the sound’s ____________ • pitch Next Question

19. Light Tricks– 20 points • Interaction between two waves that meet is called ____________, and it can be constructive or destructive. • Interference Next Question

20. Light Tricks– 30 points • When two waves meet to make a wave with a smaller amplitude, the type of interference is ___________. • destructive Next Question

21. Light Tricks– 40 points • Sound waves travel through a medium as _______________ waves. (the type of mechanical wave) • Longitudinal Next Question

22. Light Tricks– 50 points • The pitch of a sound depends on the wave’s ____________. (The higher the pitch of the sound, the higher this must be.) • Frequency Next Question

23. The Waves Don’t Stop! – 10 points • Mechanical waves are created when a source of energy causes a medium to _____________. • Vibrate Next Question

24. The Waves Don’t Stop!– 20 points • The distance between two crests of a wave would be called its ____________. • Wavelength Next Question

25. The Waves Don’t Stop!– 30 points • The amplitude of a sound wave helps determine how _________ the sound will be. • loud Next Question

26. The Waves Don’t Stop!– 40 points • Bats & dolphins have the ability to locate food using a skill called ___________. • Echolocation Next Question

27. The Waves Don’t Stop!– 50 points • Explain the following: (1) Why does sound travel faster in air that is 30o than air that is 20o? (2) Why would Chuck Yeager have chosen a high altitude to break the sound barrier? • (1) molecules already moving faster, so they transfer energy faster (2) high altitude=low temp=easier to break speed of sound since sound would travel slower there Next Question