Definitions
The number of waves that pass one point in a certain amount of time. A. frequency B. Amplitude C Trough
A. Frequency
What creates waves? a. energy b. surfers c. weather d. wind
A. Energy
An eardrum is?
A thin piece of skin in the ear
Free Points
Free Points
Sound waves travel the slowest through?
A. Gas B. Liquid C. Outer space D. Solid
The peak, or highest point, of a wave. A crest B. Solid C. Wavelength
A. Crest
Sound waves travel fastest through __________. a. gases b. liquids c. outer spaced. solids
D. Solids
Free Points
Free Points
Which animal uses echolocation? a. dolphin b. robin c. whale d. zebra
A. Dolphins
What do surfers look for when they are surfing? a. birds b. directions c. patterns d. sand
C. Patterns
The height of a wave from rest position. A. echolocation B. Frequencies C. Amplitude
C. Amplitude
T or F: Air particles travel in waves
True
What do vocal cords act like? a. a barrier b. a blockage c. a drum d. a microphone
D. Microphone
Some animals in the ocean use sound to __________. a. sleep b. eat fish c. locate habitats d. avoid predators
D. Avoid predators
What are radio waves like? a. They have long wavelengths and low energy. b. They have short wavelengths and low energy. c. They have long wavelengths and high energy. d. They have short wavelengths and high energy.
a. They have long wavelengths and low energy.
The distance between one point on a wave and the same point on the next wave (crest to crest or trough to trough). A. Period B. Displacement C. Complete wave D. Wavelength
D. Wavelength
Why is there no sound in space? a. There is matter. b. There is no matter. c. There are only solids. d. There are only liquids.
B. There is no matter
Energy moves through particles as a __________. a. gas b. line c. solid d. wave
D. Wave
What do some ocean animals rely on to communicate? a. sound b. gravity c. their fins d. their eyes
A. Sound
What are gamma rays like?
A. They have long wavelengths and low energy.
B. They have short wavelenghts and low energy.
C. They have short wavelengths and high energy.
B. They have short wavelenghts and low energy.
The use of sound reflection to locate objects is called?
Echolocation
What is it called when a wave loses its energy? a. bending b. breaking c. folding d. tilting
B. Breaking
What does the brain interpret vibrations as? a. light and heat b. sight and taste c. words and sounds d. speed and movement
C. Words and sounds
What do some ocean animals rely on to communicate? a. sound b. gravity c. their fins d. their eyes
A. Sound
If the frequency of a wave increases, what happens to its wavelength? a. Its wavelength increases. b. Its wavelength decreases. c. Its wavelength stops moving. d. Its wavelength vibrates in place.
B. Its wavelength decreases