Sound And Light

Question 1

What are waves?

Answer 1

Waves are vibrations that pass through matter and transform energy from place to place without solid liquid or gas being transferred.

Question 2

Mechanical waves…

Answer 2

Are waves that pass through a material that are vibrations of that material.

Question 3

Examples of mechanical waves…

Answer 3

Sound waves, seismic waves, strings.

Question 4

Electromagnetic waves…

Answer 4

Oscillating electric and magnetic fields (no material needed)

Question 5

The medium…

Answer 5

Air is considered the medium that sound travels through . It has particles which carry the vibrations.

Question 6

The more packed dense medium will pass the vibrations _______ than less dense medium

Answer 6

Faster

Question 7

Sound travels faster in ________ than in liquids & liquids more than in gases.

Answer 7

Solids

Question 8

Sound travels faster in ______ air than in cold air because it has more kinetic energy.

Answer 8

Warm.

Question 9

When sound travels through air sound is reflected from a surface this is called an

Answer 9

Echo

Question 10

Frequency….

Answer 10

Is how many waves are produced each second, measured in Hertz

Question 11

Amplitude…

Answer 11

Is the maximum distance it extends from the middle of a wave