AQA · GCSE Physics

The Hunter's Moon: reflected light, colour and orbit

Can you get 100%? Explain the light from a full Moon, use a supplied scattering rule and challenge a statement about circular motion.

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Question

8 marks

Answer all parts. The colour rule you need is supplied below. No knowledge of full-Moon dates or names is required.

1(a)

A pupil says that the Moon produces the visible light we see during a full Moon. State the original source of this light and describe what happens at the Moon before the light reaches Earth.

[2 marks]

1(b)

Use this rule: air scatters shorter-wavelength blue light away from a direct beam more strongly than longer-wavelength red light. Explain why a low Moon near the horizon can look more orange than the same Moon high in the sky.

[3 marks]

1(c)

Model the Moon as travelling at constant speed in a circular orbit around Earth. A pupil says, "Its speed is constant, so it is not accelerating and needs no resultant force." Explain why the statement is incorrect and identify the force maintaining the orbit.

[3 marks]

Start the question to write your answer, receive marks and ask Sherlock Ohms for text help.