1) Why do planets circle around the Sun instead of drifting off into space? a) Planets circle around the Sun in uniform velocity b) due to gravity c) Planets are attracted to the heat of the Sun d) magic 2) What will happen without the Sun? a) plants continue to carry out photosynthesis b) temperature becomes extremely hot c) earthquakes will occur d) nothing could survive 3) What gases does the Sun consists of ? a) nitrogen and oxygen b) neon and argon c) hydrogen and helium d) chlorine and fluorine 4) Which of the following are not characteristics of Mercury? a) fastest planet to go around the Sun b) has no oxygen c) has a moon d) high temperature difference during day and night 5) What is similar between Earth and Venus? a) Their size and gravity b) Their composition of atmosphere c) Their temperature  d) Their climate 6) How many moons does Mars have? a) one b) three c) two d) zero 7) Which planet cannot be seen in the night sky? a) Neptune b) Jupiter c) Venus d) Saturn 8) What is the great red spot on Jupiter? a) It is due to the mountains on Jupiter b) It is a storm c) Due to gases on Jupiter d) Clouds of sulphuric acid 9) Why is Uranus blue in colour? a) colour of water on Uranus b) due to the weather on Uranus c) It is the coldest planet in the solar system d) It is covered in blue clouds made of methane 10) Why was Pluto declared as a dwarf planet? a) It is made of ice and rocks b) It is located in the Kuiper belt c) It is very small d) It is too far away

SOLAR SYSTEM

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