1) Which of the followings is not a member of the solar system? a) Sun b) asteroid c) Milky way d) pluto 2) How many planets are there in the solar system? a) 7 b) 8 c) 9 d) 10 3) Which of the celestial bodies make up 99.9% of the total mass of the solar system? a) Jupiter b) Sun c) Saturn d) Earth 4) Where is asteroid belt found? a) between Earth and Mars b) between Mars and Jupiter c) between Mercury and Venus d) Between Jupiter and Saturn 5) Which planet has very thin atmosphere (air) and covered with craters坑？ a) Mercury b) Venus c) Uranus d) Neptune 6) Which planet is the closest to the Sun? a) Mars b) Mercury c) Venus d) Earth 7) Which planets is the largest gas planet with Great Red spot due to storm? a) Mars b) Jupiter c) uranus d) Saturn 8) Which planets is 70% covered by water , has atmosphere and can sustain life? a) earth b) mars c) venus d) mercury 9) This is the hottest planet as it contains a lot of carbon dioxide gas that traps heat. What is this planet? a) Mars b) Mercury c) Venus d) Jupiter 10) This is the second large gas planet is known for its magnificent ring(mainly ice particles). What planet is it? a) Saturn b) uranus c) neptune d) jupiter 11) The furthest planet which has strong winds with Great dark spot. a) Uranus b) neptune c) jupiter d) saturn 12) This planet has the most similar environment to the Earth. It has atmosphere, rivers and lakes. Half smaller than the earth. a) Mercury b) venus c) mars d) jupiter 13) This planet rotates on its side , axis tilted 90° , seems roll around the Sun. a) saturn b) jupiter c) uranus d) neptune 14) This planets has the most moons/ natural satellites. a) Jupiter b) Uranus c) saturn d) neptune 15) Which of the two planets have no natural satellite? a) mercury b) mars c) venus d) earth 16) Which is the hottest part of the Sun? a) core b) radiative zone c) convection zone d) photoshere 17) Which of the following is NOT the atmospheric structure of the Sun? a) photosphere b) chromosphere c) core d) corona 18) Which of the two solar activities form solar storms that affect (Earth's ionosphere) telecommunication? a) Solar flare b) sunspot c) CME- coronal mass ejection d) prominence 19) How long is the solar cycle? a) 9 years b) 10 years c) 11 years d) 12 years 20) Which of the following is wrong? a) stars produce their own light. b) We can see 5 planets by naked eyes from the Earth. c) There are 5 dwarf planets in the solar system. d) Asteroids are made mainly ice, rocks and dust. 21) What does 1 astronomical unit(AU) mean? a) The distance between Sun and Mercury b) The speed of light in the universe c) The distance travelled by the light in the universe in one year d) The distance between the sun and the Earth 22) Which is NOT true about the Sun? a) 150000000km apart from the Earth b) 330000 times of the mass of Earth c) Middle-aged at 4.6 billion years old now d) it has solid, liquid and gas state in different layers.

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