Waves

Question 1

The Doppler effect

Answer 1

The Doppler effect is the apparent change in the frequency of a wave due to the relative motion between the source of the wave and the observer.

Question 2

What is a wave

Answer 2

a wave is a means of transferring energy by oscillations from one place to another.

Question 3

What are transverse

Answer 3

A transverse wave is a wave where the direction of oscillation is perpendicular to the direction in which the wave travels.

Question 4

What is longitudinal wave

Answer 4

A longitudinal wave is a wave where the direction of oscillation is parallel to the direction in which the wave travels.

Question 5

4 Characteristics of a wave

Answer 5

Reflection, refraction, diffraction and interference

Question 6

Stationary (standing) waves

Answer 6

formed when two periodic waves of the same frequency and amplitude travelling in opposite directions meet.

Question 7

Natural frequency

Answer 7

The natural frequency of an object is the frequency at which the object will vibrate if free to do so.

Question 8

Resonance

Answer 8

Resonance is the transfer of energy so that a body vibrates at its natural frequency.

Question 9

Sound intensity

Answer 9

Sound intensity is defined as power per unit area.