| A | B |
| Meteor | shooting star |
| Meteorite | space rock that hits Earth's surface |
| Asteroid | Space rock bigger than 10 meters |
| Meteoroid | Space rock smaller than 10 meters |
| burns | meteors do this when entering atmosphere |
| a mile | asteroids can be this big around |
| Oregon | hit by meteorite in the 50's |
| dinosaurs | asteroid caused extinction of these |