Question 1

ultrasound

Accepted Answer

anything above 20,000 Hz

Question 2

infrasound

Accepted Answer

anything below 20 Hz

Question 3

mechanical and longitudinal

Accepted Answer

type of waves that sound is

Question 4

vibrations

Accepted Answer

this causes sound waves

Question 5

Hertz

Accepted Answer

SI units for frequency

Question 6

decibels

Accepted Answer

SI unit for intensity (loudness)

Question 7

solids

Accepted Answer

Sound waves travel fastest through this state of matter

Question 8

gases

Accepted Answer

Sounds waves travel slowest through this state of matter

Question 9

high

Accepted Answer

Temperatures that sound waves move fastest through

Question 10

resonance

Accepted Answer

2 or more objects vibrating at the same frequency

Question 11

120 db

Accepted Answer

A human would have permanent deafness at this loundness

Question 12

Black

Accepted Answer

When all colors of light are absorbed, you see

Question 13

White

Accepted Answer

When all colors of light are reflected, you see

Question 14

prism

Accepted Answer

Device that can split visible light into the 7 colors

Question 15

frequency of sound wave

Accepted Answer

Pitch is caused by this

Question 16

amplitude of sound and closeness to sound source

Accepted Answer

Intensity of sound is caused by this

Question 17

primary additive colors

Accepted Answer

red, green and blue

Question 18

primary subtractive colors

Accepted Answer

cyan, yellow, magenta

Question 19

plane mirror

Accepted Answer

creates upright and same size image

Question 20

concave mirror

Accepted Answer

creates inverted and smaller image OR magnified and upright image

Question 21

convex mirror

Accepted Answer

creates smaller and upright image

Question 22

converge

Accepted Answer

light rays do this when hitting a concave mirror

Question 23

diverge

Accepted Answer

light rays do this when hitting a convex mirror

Question 24

Doppler effect

Accepted Answer

the apparent change in the frequency of a sound due to motion of either the listener or the sound source

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