What is the order of the planets in our solar system?

What would the weight of a 50kg object be on Earth?

What would the mass of a 50kg object be on the moon?

How do we have seasons?

What kind of waves are light waves?

What is the law of reflection?

Why might light waves change speed?

Finish the sentence: 'At the boundary between two transparent substances...'

Diagram of refraction:
(click thumbs up if you understand it)

What is dispersion?

What are the primary and secondary colours of light?

What kind of waves are sound waves?

Can sound be reflected off surfaces?

What is the amplitude?

What is the wavelength?

What is the frequency?

Does sound travel in gases quicker than liquids and solids?

What is the frequency of sound waves measured in?

Finish the sentence: 'Sound with a frequency of more than 20,000 Hz is called...'

Complete the sentence: 'Current in a series circuit...'

Complete the sentence: 'Voltage in a series circuit..'

Complete the sentence: 'Current in a parallel circuit...'

Complete the sentence: 'Voltage in a parallel circuit..'

State 3 uses of electromagnets.

State the energy transformation for a television.

How is energy generated from coal?

Name the 10 forms of energy.

What do ammeters measure and where do they go in a circuit?

What do voltmeters measure and where do they go in a circuit?

What are the 3 types of weathering?
Give examples of them.