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| Question | Answer |
| Which gas was present in the early earth atmosphere? | A) Ammonia B) Nitrogen dioxide C) Ozone |
| What do scientists think was responsible for much of the gases in the early earth atmosphere? | Burning fossil fuels Volcanoes Dinosaurs |
| Which gas makes up nearly 80% of our current atmosphere? | Carbon dioxide Oxygen Nitrogen |
| Granite is an example of which type of rock? | Igneous Metamorphic Sedimentary |
| Which type of rock is it most likely to be if it contains fossils? | Igneous Metamorphic Sedimentary |
| What type of crystals will an extrusive igneous rock have? | Large Small None at all |
| Which type of rock is formed from cooled magma? | Igneous Metamorphic Sedimentary |
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