Waves

Question 1

Progressive Wave

Answer 1

A wave in which the medium is displaced in the same line as the direction of energy transfer

Question 2

Displacement

Answer 2

The distance from the equilibrium position

Question 3

Amplitude

Answer 3

The maximum displacement from the equilibrium position

Question 4

Wavelength

Answer 4

The minimum distance between two points oscillating in place

Question 5

(Time) Period

Answer 5

The time taken by a complete cycle of the wave to pass a point

Question 6

Frequency

Answer 6

The number of wavelengths passing a given point per unit time

Question 7

Speed of Wave

Answer 7

The distance travelled by the wave per unit time

Question 8

Diffraction

Answer 8

The spreading out of waves when they pass an obstruction. This obstruction is typically a narrow slit (an aperture)

Question 9

Reflection

Answer 9

When light “bounces” off a material which is different to the one in which it is travelling

Question 10

Refraction

Answer 10

The change of direction of wave that occurs when it’s speed changes, this is due to a change in optical densities that the wave travels in m