Science 8

Question 1

Sound is a form of energy produced by:

Answer 1

Vibrating matter

Question 2

Sound travels in:

Answer 2

Waves

Question 3

The _______ of a sound is the number of vibration in a given time.

Answer 3

Frequency

Question 4

An object vibrating faster will have a higher frequency and a higher:

Answer 4

Pitch

Question 5

The distance between compressions, or between the peaks of two waves is the:

Answer 5

wavelength

Question 6

What kind of matter does sound travel through fastest?

Answer 6

Solids

Question 7

Sound travels slower through gases than through liquids and solids because the molecules in gases are:

Answer 7

farthest apart

Question 8

Dogs, bats and other animals can hear ______ sounds that humans cannot hear. Whales can hear lower frequency sounds.

Answer 8

high frequency

Question 9

Musical instruments ______ to produce sounds.

Answer 9

Vibrate

Question 10

Sound is a ______ wave.

Answer 10

Compression

Question 11

An instrument that uses sound echoes to measure see the ocean floor or underwater objects is a:

Answer 11

Sonar

Question 12

______ is a combination of several different wavelengths of light traveling together.

Answer 12

white light

Question 13

The wavelengths of light from longest to shortest are red, orange, yellow, green, blue, indigo, violet. To remember this we use:

Answer 13

Roy G. Biv

Question 14

The color light with the longest wavelength is:

Answer 14

red

Question 15

The color light with the shortest wavelength is:

Answer 15

Violet

Question 16

Light travels much ______ than sound through the atmosphere.

Answer 16

faster