Complete the gaps with a phrase from the box.


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   cause      cross      flattened      injured      monitor      spot      struck      wiped out   
1. When the meteorite exploded on 15 February 2013, many people were (hurt) by falling glass.
2. The explosion of another small object (made flat) many trees.
3. Scientists weren't expecting the Russian meteorite because it had been too small for anyone to (see or notice).
4. It was probably a large asteroid colliding with Earth that (made extinct) the dinosaurs.
5. 65 million years ago, an enormous object (hit) the Yucatan region of Mexico with a force of 100 megatons.
6. Even a much smaller asteroid can (do) a lot of damage.
7. Jupiter protects Earth by diverting away the dangerous comets and asteroids that might (pass from one side to the other of) Earth's orbit.
8. Scientists will now (observe or check regularly over a period of time) potential hazards even more carefully.