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Review Puzzle
15
billion: Earth formed 4.6 _____ years ago
platentesimals: These collided to help form Earth
millions: Earth's oceans formed when it cooled and rained for _____ of years
volcano: This brought new gases to Earth's atmosphere when it erupted
comets: _____ also brought new gases to Earth's atmosphere from space
dioxide: Our atmosphere use to have a lot of Carbon _____
nitrogen: Now our atmosphere is mostly made out of _____
tectonic: Our continents have moved over time because of _____ plates
physical: _____ weathering is caused by forces from wind and water
chemical: _____ weathering is caused by reactions. example-acid rain
direct: _____ light hits mostly near the equator making that area warmer.
radiometric: We can find the age of fossils and rocks by _____ dating
half: Scientists look at radioactive materials inside the rocks and fossils and see how many ___ lives
parent: _____ isotope is the original radioactive material
daughter: Once the radioactive material is stable, it is called ____ isotope
Review Puzzle
| | This brought new gases to Earth's atmosphere when it erupted |
| |
| | _____ light hits mostly near the equator making that area warmer. |
| |
| | _____ weathering is caused by forces from wind and water |
| |
| | _____ isotope is the original radioactive material |
| |
| | Earth's oceans formed when it cooled and rained for _____ of years |
| |
| | _____ weathering is caused by reactions. example-acid rain |
| |
| | _____ also brought new gases to Earth's atmosphere from space |
| |
| | Earth formed 4.6 _____ years ago |
| |
| | Now our atmosphere is mostly made out of _____ |
| |
| | We can find the age of fossils and rocks by _____ dating |
| |
| | Our continents have moved over time because of _____ plates |
| |
| | Scientists look at radioactive materials inside the rocks and fossils and see how many ___ lives |
| |
| | Once the radioactive material is stable, it is called ____ isotope |
| |
| | Our atmosphere use to have a lot of Carbon _____ |
| |
| | These collided to help form Earth |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only
Review Puzzle
| | This brought new gases to Earth's atmosphere when it erupted |
| |
| | _____ light hits mostly near the equator making that area warmer. |
| |
| | _____ weathering is caused by forces from wind and water |
| |
| | _____ isotope is the original radioactive material |
| |
| | Earth's oceans formed when it cooled and rained for _____ of years |
| |
| | _____ weathering is caused by reactions. example-acid rain |
| |
| | _____ also brought new gases to Earth's atmosphere from space |
| |
| | Earth formed 4.6 _____ years ago |
| |
| | Now our atmosphere is mostly made out of _____ |
| |
| | We can find the age of fossils and rocks by _____ dating |
| |
| | Our continents have moved over time because of _____ plates |
| |
| | Scientists look at radioactive materials inside the rocks and fossils and see how many ___ lives |
| |
| | Once the radioactive material is stable, it is called ____ isotope |
| |
| | Our atmosphere use to have a lot of Carbon _____ |
| |
| | These collided to help form Earth |
| |
© 2013
PuzzleFast.com, Noncommercial Use Only
