Waves and sound

Question 1

Transverse wave

Answer 1

Wave that moves perpendicular to the medium

Question 2

Longitudinal wave

Answer 2

Wave that moves parallel to the medium in which it travels

Question 3

Wavelength

Answer 3

Distance between successive crests or troughs

Question 4

Frequency

Answer 4

Number of oscillations per second

Question 5

Period

Answer 5

Time required for a complete oscillation

Question 6

Amplitude

Answer 6

Displacement from equilibrium

Question 7

Node

Answer 7

Two moving waves meet and destructively interfere, looks stationary

Question 8

Anti-node

Answer 8

Two moving waves meet and constructively interfere, looks like it’s standing

Question 9

Out of phase

Answer 9

Reflected from a fixed end, other side

Question 10

In phase

Answer 10

Reflected from a free end, still on same side

Question 11

After pulses overlap, what do they do?

Answer 11

Pass through - waves are not particles, so they don’t reflect. They combine and pass through

Question 12

Constructive interference

Answer 12

Adds to become a bigger pulse

Question 13

Destructive interference

Answer 13

Subtracts to become a smaller pulse

Question 14

Supercrest

Answer 14

Crest overlapping with crest

Question 15

Supertrough

Answer 15

Trough overlapping with trough

Question 16

What type of wave is sound?

Answer 16

Longitudinal

Question 17

How is sound transmitted

Answer 17

Needs a medium, transmitted through the collision of particles