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1. What is created when meteorites strike on a surface of a planet or moon? A canyon B crater C plateau D. pothole 2. What is a piece of rock or other matter that has landed on earth? A asteroid B comet C meteor D. meteorite 3. What are the similarities between asteroids, comets and meteorites ?They A orbit the sun C. come from Oort cloud B are made of rocks D. come from asteroid belt 4. Which describes comets? A. They are shooting stars B. They are also called the smallest dwarf planets C. They are large balls of ice mixed with rocks and dust. D. All of the above. 5 What happens to a comet as it gets closer to the sun? A It explodes B. It will remain the same C. It melts and disappears D. It forms long tails made of gas and dust 6. What is an asteroid? It is a A miniature star B giant snowball in space C. rock that is orbiting the sun D. small body orbiting sun with volatile gases 7. Where do most asteroids located? They are between the orbits of A Earth and Mars C. Mars and Jupiter B. Jupiter and Saturn D. Venus and Earth 8. In the asteroid impact theory of the extinction of the dinosaurs some 65 million years ago, the dinosaurs (and over half of all the other species on Earth at that time) died off largely because of the A injuries suffered from direct hits of pieces of the asteroid or comet B impact caused massive earthquakes and volcanic activity worldwide C. radiation from iridium in the asteroid caused the dinosaurs to die of cancer D. dust injected into the stratosphere from the impact absorbed visible light from the Sun, causing global temperatures to plummet​
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