Like an onion
which layer of the Earth is the thinnest?
Crust
When Continents collide what type of boundary is this?
Convergent boundary
When molten magma comes to the surface it is called what?
Lava
How do metamorphic, igneous, and sedimentary rock change to sediment?
weathering/ erosion
What are the four things needed for a soil?
1. Rock particles
2. Organic matter
3. air
4. water
What are the layers of the Earth starting with least dense and going to most dense?
Crust, Mantle, Outer Core, Inner Core
This boundary occurs when plates slide past each other
Transform Boundary
What occurs in the mantle that drives the tectonic plates?
Convection currents
This is called when rocks or sediment are dropped off in a different area either by wind or water
Deposition
which type of environment would contain nutrient-rich soil? ( what needs to be there)?
wet climate and many plants
Which boundary most likely causes mountains to form?
Convergent
Which boundary most likely causes mountains to form? For extra points, which two kind of continents would it be?
Convergent ( C-C)
What may form at a Continental- Oceanic boundary?
Volcanoes
How would igneous and sedimentary rocks change to metamorphic rock?
heat and pressure
What two things determine the formation of soil in an area?
Rocks and climate of the area
Which type of crust is more dense?
Oceanic
What process is responsible for the Atlantic Ocean becoming wider by a few centimeters each year?
sea-floor spreading/ divergent boundary
A volcano that erupted recently
Mt. Saint Helens
When rocks break apart they create what?
Sediment
Stewardship
This is called when one crust goes under the other.
Subduction
New crust is created at what boundary?
Divergent Boundary
What is considered a Super Volcano in the United States?
What are three different types of weathering?
Moving water, wind, freezing water, plants, glaciers, oxidation, carbon dioxide
What is inside the soil that aids in putting nutrients back in the soil?
Decomposers.
What are the things that makeup the crust called?
Tectonic plates
The two types of crust are called what?
Oceanic and Continental
Melting
When rocks come out of the volcano or from the sea floor spreading, they are what type of rock?
Igneous Rock
When you prevent soil erosion or keep soil from being contaminated is called
soil conservation