Interactions Of Waves

Question 1

Reflection

Answer 1

When an object or wave hits a surface through which it cannot pass, it bounces back

Question 2

The law of reflection

Answer 2

The angle of incidence(coming wave) equals the angle of reflection

Question 3

Rarefraction

Answer 3

The bending of waves due to change in speed

Question 4

Diffraction

Answer 4

When a wave moves around a barrier through an opening in the barrier it bends and spreads out

Question 5

Interference

Answer 5

The interaction of waves when they meet

Question 6

Constructive interference

Answer 6

The interface that occurs when waves combine to make a wave with a bigger amplitude

Question 7

Destructive interference

Answer 7

The interface that occurs when two waves combine to make a wave with a smaller amplitude

Question 8

Standing wave

Answer 8

A wave that appears to stand in one place, even though it is really two waves interfering as they pass through each other

Question 9

Node

Answer 9

Points of zero amplitude in a standing wave

Question 10

Antinodes

Answer 10

Points of max amplitude on a standing wave. Points of min energy

Question 11

Natural frequency

Answer 11

Once you get it going you only need one push to keep it going

Question 12

Resonance

Answer 12

An increase in the amplitude of a vibrato that occurs when external vibrations match an objects natural frequency