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1. Complete the following list of planets in order of INCREASING distance from the Sun
MERCURY
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EARTH
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SATURN
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PLUTO
2. Name the planet which
a. - Has the longest year (i.e. takes the longest
time to orbit the Sun)
b. - Is the smallest.
c. - has the most moons.
3. What are the COOL areas on the Sun called?
4. What 4 letters are used to name the organisation in America which is responsible for space exploration?
5. Name any TWO of the four "Gas" planets.
6. What is the largest object in the Solar System?
7. What source of energy did the Pioneer and Voyager space probes use in order to explore the outer regions of the Solar System?
8. The force of gravity on the Earth is 10 N/kg, on Venus is 9 N/kg, on Mars is 4 N/kg and on Jupiter is 26 N/kg. On which of these four planets would you:-
a. - have greatest difficulty in running?
b. - be able to jump the highest?
c. - Weigh over twice what you do on the Earth?
Include reasons in your answer.
9. Which gas does the Sun mainly contain?
10. Some space probes have solar panels on the outside of their bodies. What are these panels for?
