The solar system consists of the Sun and all heavenly bodies that are held together by the Sun’s __________., A. Heat, B. Light, C. Gravity, D. Rotation, How many planets are there in our solar system?, A. 7, B. 8, C. 9, D. 10, The Sun is located at the __________ of the solar system., A. Edge, B. Centre, C. South, D. North, What type of star is the Sun?, A. Blue star, B. White dwarf, C. yellow giant, D. Hot glowing star, The Sun is made mainly of which two gases?, A. Oxygen and carbon, B. Hydrogen and helium, C. Nitrogen and oxygen, D. Hydrogen and nitrogen, Which planet is the smallest in the solar system?, A. Mars, B. Venus, C. Mercury, D. Earth, Mercury is closest to which object?, A. Earth, B. Venus, C. Moon, D. Sun, Why does Mercury not have an atmosphere?, A. It is too far from the Sun, B. It has no gravity, C. The Sun’s heat removed it, D. It is very cold, One rotation of a planet on its axis is called a __________., A. Year, B. Orbit, C. Day, D. Month, One revolution of a planet around the Sun is called a __________., A. Day, B. Month, C. Rotation, D. Year, The four outer planets are also called __________., A. Rocky planets, B. Gas giants, C. Terrestrial planets, D. Inner planets, Which of these is NOT a terrestrial (rocky) planet?, A. Earth, B. Venus, C. Mars, D. Jupiter, A group of stars forming a pattern in the sky is called a __________., A. Galaxy, B. Planet, C. Constellation, D. Satellite, Which constellation looks like the letter “W” or “M”?, A. Leo, B. Scorpius, C. Cassiopeia, D. Pleiades, Which constellation is also known as the Lion?, A. Leo, B. Scorpius, C. Cassiopeia, D. Ursa Major

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