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1. Bright objects in the night sky which stay in fixed positions are
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tick the correct answer 3 |
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planets |
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stars |
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satellites |
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[1]
2. Bright objects which move quickly across the night sky are
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tick the correct answer 3 |
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planets |
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stars |
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satellites |
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[1]
3. Bright objects which move slowly across the night sky are
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tick the correct answer 3 |
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planets |
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stars |
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satellites |
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[1]
4. Two planets A and B are orbiting a star as shown in the diagram below. Planets A and B are the same size and mass.
a) Which planet, A or B, has the greatest force of gravity between it and the star ? ...............
b) Explain your answer ..............................................................................................................
.......................................................................................................................................................
.......................................................................................................................................................
[2]
5. In the table below are four uses for satellites in orbit around the Earth. In the spaces provided
a) write the letter G if the satellite should be placed in a geostationary orbit
b) wite the letter P if the satellite should be placed in a polar orbit
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use
of satellite |
G
or P |
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USA to Europe phone link |
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weather monitoring |
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military surveillance |
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road vehicle navigation system |
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[4]
6. The diagram below shows the Sun (S) and the orbit of the planet Jupiter (J) (not to scale).
a) Draw on the diagram the orbit of a typical comet.
b) Mark an X on the orbit you have drawn to show the point at which the comet is moving with its maximum speed.
c) Give a reason why the speed of a comet changes during its orbit
.......................................................................................................................................................
.......................................................................................................................................................
[4]
7. Given below are 6 statements referring to the life cycle of a star. In the spaces provided write the numbers 1 to 6 to show the correct order of events in the life cycle of a star.
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description |
order |
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main stable period |
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contraction to become a white dwarf |
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expansion to become a red giant |
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neutron star |
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supernova explosion |
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gravity and radiation pressure forces become balanced |
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[6]
8. Explain what is meant by the “red shift”
..............................................................................................................................................................
..............................................................................................................................................................
[2]
9. Fill in the missing words in the passage below.
During a star's lifetime, nuclei of lighter elements (mainly .......... and .........) gradually fuse to produce nuclei of heavier elements. These nuclear ........ reactions release the ....... which is radiated by stars.
Nuclei of the heaviest elements are present in the Sun and atoms of these elements are present in the inner planets of the solar system. This suggests that the solar system was formed from the material produced when earlier stars ..........
[4]
Total
[25]
C:\My
Documents\Physics\Curric\Ks4\Year10\The Earth Test H.doc