1. What is the purpose of a wave?
To carry energy through matter or space.
Or, to transfer energy

2. Mechanical waves require a medium and electromagnetic do not.
What waves require a medium to travel or do they all require a medium to travel?
Mechanical waves require a medium and electromagnetic do not.

3. What are longitudinal waves?
Waves that vibrate parallel to the direction of the wave.

4. What are electromagnetic waves?
Waves of oscillating electric and magnetic fields

5. What is the height of a wave called?
Amplitude

6. What are transverse waves?
Move perpendicular to the direction of the wave

7. Bending of a wave around an opening or corner.
What is diffraction?
Bending of a wave around an opening or corner.

8. Draw and label a wave and its five main parts.
See the board

9. What is the difference between a mechanical wave and an electromagnetic wave?
Mechanical requires a medium
Electromagnetic waves do not require a medium

10. What are sound waves? Be able to give at least one example.
Waves that move out in spherical fronts.
Exp – iPods, stereos, etc.

11. What types of waves are sound waves?
Longitudinal

12. What makes sound soft or loud?
Amplitude

13. What measures the amount of energy in a sound wave?
Decibels

14. What is pitch and what determines pitch?
Pitch is the level of a particular sound and it is determined by frequency.

15. What determines loudness?
Pressure, Volume, or Intensity

16. Light scattering on a rough surface is called what?
Diffuse reflection

17. What is the wavelength of red light?
700 nm

18. What is the wavelength of violet light?
400 nm

19. What is another name for a flat mirror?
Plane

20. What is the name of a mirror that bends inward?
Concave

21. What is the name of a mirror that bends outward?
Convex

22. How does light travel?
In transverse waves

23. What is the law of reflection?
The angle of incidence of a light ray is equal to the angle of reflection of the same light ray.

24. List the waves included in the electromagnetic spectrum from low frequency to high frequency.
Radio waves, microwaves, infrared waves, visible light, UV , X-rays, and Gamma

25. Angle of Incidence
Normal
Angle of Reflection
Reflecting Surface

26. Describe three ways light is related to waves.
To transfer energy
Travel in waves
Color is reflected as light waves
Produce interference waves like water

27. Red, Orange, Yellow, Green, Blue, Indigo, Violet ROY G BIV
Name the colors of the visible light spectrum from longest wavelength to shortest wavelength. What is the acronym used to help remember the order of the visible light spectrum?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
ROY G BIV

28. Sound is a series of atmospheric pressure waves produced by what?
Vibrations