Explain the geocentric model

Explain the heliocentric model

How was the heliocentric model proved?

Explain how the heliocentric model is different to today's model

Definition of wavelength

definition of frequency

definition of amplitude

what do waves transfer

describe a transverse wave

describe a longitudinal wave

name 2 examples of transverse waves

name 2 examples of longitudinal waves

name the triangle that links speed, frequency and wavelength

how do you remember the speed, wavelength, frequency triangle?

what is frequency measured in?

what is wavelength (lambda) measured in?

what is speed measured in?

what is the law of reflection?

sound waves travel____in ______?

what happens when a wave crosses a boundary between 2 substances?

what is a real image?

what is a virtual image?

what is a converging lens used for?

what does a converging lens do?

EM waves travel_____in ______?

define the focal length

explain how a refracting telescope works

explain how a reflecting telescope works

explain what happens as you go from left to right on the EM spectrum

how do you remember the order of the EM waves?

who discovered Infrared?

who discovered UV?

what do refracting telescopes use?

what do reflecting telescopes use?

explain how infrared was discovered

explain how UV was discovered