This is a test! I'll mark brainliest! +50 1. Sound waves can pass through all of these EXCEPT:
A. air
B. steel
C. water
D. a vacuum

2. Sound travels as a:
A. wave without a medium
B. series of compressions only
C. pattern of up and down vibrations
D. pattern of compressions and rarefactions

3. Which generates waves that are capable of traveling through a vacuum?
A. a light bulb
B. a speaker
C. earthquake activity
D. volcanic eruption

4. Which of the following statements correctly describes sound and light waves?
A. Light waves are electromagnetic waves, sound waves are mechanical waves.
B. Light waves are slower than sound waves.
C. Light waves can travel through water, sound waves cannot.
D. Light waves cannot travel through space, sound waves can.

5. In which direction from a light source do light waves move?
A. directly toward the object being seen
B. directly away from the object being seen
C. in all directions
D. in every direction except where the object being seen is

6. Which of the following explains why a stop sign appears red?
A. The stop sign reflects all the wavelengths except the wavelength for the color red. The wavelength for the color red is absorbed by the stop sign, which enables us to see it as red.
B. The stop sign absorbs all the wavelengths except the wavelength for the color red. The wavelength for red is reflected into our eyes and allows us to see the stop sign as red.
7. Which wavelength of the EM spectrum carries the MOST energy?
A. radio waves
B. infrared rays
C. microwaves
D. gamma rays

8. Which color in the visible light spectrum has a wavelength shorter than that of blue?
A. red
B. yellow
C. violet
D. yellow

9. Which wavelength in the EM spectrum is used to view our bones?
A. radio waves
B. x-rays
C. infrared rays
D. ultraviolet rays

10. White objects appear white because the all light waves.
A. reflect
B. absorb

11. Which has a wavelength longer than that of blue light?
A. gamma rays
B. radio waves
C. x-rays
D. ultraviolet rays

12. Which EM wave is strong enough to kill harmful bacteria in food?
A. radio waves
B. micro waves
C. gamma rays
D. infrared rays

13. In a longitudinal wave, where are the particles most spread out?
A. compression
B. crest
C. rarefaction
D. trough

14. Which is transferred by a micro wave?
A. air
B. energy
C. matter
D. space

15. Which is an example of an electromagnetic wave?
A. a flag waving in the wind
B. a vibrating guitar string
C. the changes in the air that result from blowing a horn
D. the waves that heat a cup of water in a microwave oven