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What do we know about the Earth in Space?
Name: ……………………………..
1. How was the Barringer crater in Arizona formed?
……………………………………………………………………………………
2. The oldest rocks on the Earth are about 4 thousand million years old. Is the Earth older or
younger than this?
……………………………………………………………………………………
3. On the diagram of the Earth mark
(a) the crust
(b) the mantle and
(c) the core.
………………..
………………..
………………..
4.The Earth was formed from clouds of :
(a) ………………………
(b)
………………………
4. Which is the larger – the biggest asteroid or the biggest comet?
……………………
5. Which shines by its own light – comets, the Sun, asteroids, planets?
……………………………………………………………………………………
6. Which bodies orbit the Sun in very elliptical orbits and are made of ice and rock?
……………………………………………………………………………………
7. What powers the Sun – nuclear fission or nuclear fusion? ……………………………
8. Which element is the main ‘fuel’ for this process?
………………………..…………
9. Which were made in earlier stars (a) light elements (b) heavy elements?
……………………………………………………………………………………
10. The collision of what with the Earth may have caused the extinction of the dinosaurs?
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……………………………………………………………………………………
11. What is the speed of light?
(a) infinite (b) 300 000 km/s (c) 3000 m/s
…………………………………………
12. (a) When we look at a distant galaxy does it appear older or younger than it really is?
…………………………………
(b) Why is this?
……………………………………………………………………………………
……………………………………………………………………………………
13. What is meant by a ‘light year’?
……………………………………………………………………………………
14. Write down in order of increasing age – Sun, Earth, Universe.
(a)…………………… (b) ……………………… (c)
…………………………
15. Write down in order of increasing size – Milky Way, Earth, Sun.
(a)…………………… (b) ……………………… (c)
…………………………
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