Question 1
A group of stars is called a galaxy.
What is the name of our galaxy?
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[1 mark]
The Sun is one of the stars in our galaxy.
What was the Sun originally formed from?
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[1 mark]
Which of the following forces was involved in the formation of the Sun?
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[1 mark]
Stars produce light because they release energy.
Complete the sentence.
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[1 mark]
Visible light and infrared radiation travel from the Sun to the Earth.
Which statement describes the time taken for visible light and infrared radiation to travel from the Sun to the Earth?
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[1 mark]
Infrared radiation has a longer wavelength than visible light.
Complete the sentence.
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Compared with the frequency of infrared radiation, the frequency of
[1 mark]
The Sun and the Earth both emit infrared radiation.
How does the rate of infrared radiation emitted by the Sun compare with the rate of infrared radiation emitted by the Earth?
Give a reason for your answer.
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[2 marks]