Earth's Layers
List the 4 layers in order from the outside to the middle.
Crust, Mantle, Outer Core, Inner Core
What is the theory called that the Earth's crust is made of giant movable parts?
Plate tectonics
Which type of rock usually contains fossils?
sedimentary
What are the 3 types of rocks?
Sedimentary, Metamorphic, Igneous
Which layer is the largest and is a mix of hard and melted rock?
Mantle
What type of energy causes the plates in the crust to move?
thermal energy
What is the process called when wind and rain break large rocks into smaller rocks?
Weathering
What needs to happen for igneous rocks to form?
Melting and cooling.
Which layer is all molten (melted) rock?
Outer Core
Which type of boundary has plates that slide against each other? What does it usually cause?
Transform, Earthquakes
If a fossil of a fish is found in Nevada, what inference can we make?
It used to be under water.
What needs to happen for metamorphic rocks to form?
Heat and pressure
Which layer has so much pressure that the rock stays solid, even though it is the hottest layer?
Inner Core
What type of boundary causes plates to move apart?
Divergent
Where in the Earth's crust would you find the newest layer of rocks?
On the top.
What needs to happen for sedimentary rocks to form?
What type of weathering causes sand dunes?
Wind
Which type of boundary causes the plates to move towards each other?
Convergent
What is the purpose of a dichotomous key in geology?
To identify the name of a rock.
Describe the rock cycle.
Good luck :)