| A | B |
|---|
| How is a cavern produced? | by weathering and corrosion |
| What happens when a crack in a rock is filled with water & the water freezes? | the crack gets larger |
| What happens when moving water slows down? | deposition |
| What can make fossils? | plants or animals |
| A living thing dies & is buried & sand & soil harden & turn to rock & the rock wears away forming a ___ | fossil imprint |
| Loose material that covers much of the earth | soil |
| What is the top layer of soil called? | topsoil |
| What is the 2nd layer of soil called? | subsoil |
| What is the 3rd layer of soil called? | bedrock |
| Where is more humus found in the soil? | In the top layer or top soil |
| Where can large amounts of hums be found? | in a forest |
| Water, wind, and plant roots can weather rocks and cause a rock to have ___. | holes |
| If a paleontologist finds a fossil of a fish on a mountain, what can you conclude? | that the mountain was once under water |
| What can cause erosion? | glaciers, moving water, and wind |
| What is a feature formed by deposition? | a delta |
| What is the dropping of sediment by wind, water, or gravity called? | deposition |
| Why do plants grow better in soil with humus? | humus has more nutrients |
| How could you make a model of how clay soil holds water? | by pouring water into a sponge |
| What is the bedrock made of? | solid rock |
| What does rock that has been weathered by moving water look like? | it is worn down and smooth |
| When fossilized trees turn into rock, they are | petrified |
| When small organisms are trapped in sticky tree sap, the hardened tree sap makes a material called | amber |
