Rocks
True or False: All rocks are made of minerals
True
True or False: Weathering is another name for Erosion.
False: Weathering is the breaking down of rocks. Erosion is the movement of those sediments.
heat and pressure creates this type of rock
What is metamorphic?
Can plants cause weathering?
Yes. Their roots can grow large and break down rocks
What are the THREE soil layers?
Topsoil, subsoil, bedrock.
melting and cooling creates this type of rock
What is igneous?
What could stop erosion from happening?
plants!!! The roots hold the soil down
Which layer contains organic matter?
TOPSOIL!!!
compaction and cementation creates this rock type
What is sedimentary?
Give an example of erosion?
A river takes soil with it as the water flows (answers vary.)
What is soil made of?
mineral matter, organic matter, water, air
Basalt, Granite, Obsidian, and Pumice are all what type of rock?
What is igneous?
Name 2 forces of nature that can cause weathering
water, plants, ice, wind
This type of soil feels sticky when made when, and lets very little water through.
What is clay?