Flashcards
the Earth
Cards in this deck (13)
- 1Name two reasons why the Earth is different to other planets1. It has a breathable atmosphere
2. It has water in all three states - 2What is the actual shape of the Earth?An oblate spheroid
- 3What is the meaning of perihelion?The position of a body in the Solar System when it is at its closest to the Sun
- 4What is the meaning of aphelionThe position of a body in the Solar System when it is at its furthest from the Sun
- 5Why do stars twinkle?The Earth's atmosphere is unsteady and 'shakes' the stars light as it comes through the air
- 6Why do stars twinkle less when they are higher up?There is a smaller distance between the star and the Earth
- 7Why is the sky red when the Sun sets?More of the Sun's red rays pass through the atmosphere, making it look red
- 8Why is the sky blue?The atmosphere scatters the blue light from the Sun's rays making it look blue
- 9What are the two types of days?Sidereal and solar
- 10Which type of day do we use normally?Solar
- 11How much longer or shorter is a sidereal day compared to a solar day?4 minutes shorter
- 12What EM rays get through the atmosphere?SHORT radio waves, Microwaves and Visible light
- 13What stops UV light from reaching the Earth's surfacethe Ozone layer
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- GCSE Science (Astronomy) Flashcards on the Earth, created by Ethan Collins on 16/11/2015.
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- Ethan Collins
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