Earth's Layers
This is the solid, rocky outer layer of the Earth where we live
What is the crust?
The Earth's crust is divided into large pieces called these.
What are tectonic plates?
This type of natural disaster happens when energy is suddenly released along a fault.
What is an earthquake?
What is collide (or push together)?
The heat that drives movement in the mantle comes from here.
What is Earth's core?
This layer is made of hot, flowing rock that moves slowly in convection currents.
What is the mantle?
This theory explains how Earth's plates move and change shape over time.
What is the theory of plate tectonics?
A crack in the Earth's crust is where movement occurs.
What is a fault?
What is pull apart (diverge)?
The movement of hot material rising and cool material sinking is called this.
What is convection?
This part of Earth's core is liquid metal made mostly of iron and nickel.
What is the outer core?
This layer of the mantle allows plates to "float" and move slowly.
What is the asthenosphere?
The location on the surface directly above where an earthquake starts.
What is the epicenter? (FREE POINT :) we didn't dive this far into our study of earthquakes yet)
This process slowly wears away down mountains and rocks over time.
What is erosion? (FREE POINT)
These boundaries occur when plates pull apart under the ocean.
What are mid-ocean ridges (divergent boundaries)?
This is the solid metal center of the Earth.
What is the inner core?
Plates that move toward each other form this type of boundary.
What is a convergent boundary?
This happens when magma rises to the surface and erupts as lava.
What is a volcanic eruption?
When two continental plates push together and fold upward, this landform is created.
What are folded mountains? (FREE POINT)
Scientists who study earthquakes use this tool to measure seismic waves.
What is a seismograph? (FREE POINT)
What is the lithosphere?
Plates that slide past each other form this type of boundary.
What is a transform boundary?
This circular area around the Pacific Ocean is known for frequent earthquakes and volcanoes.
What is the Ring of Fire? (FREE POINT :) we didn't dive this far into our study of volcanoes yet)
What is a volcano?
These waves carry energy from an earthquake through the ground.
What are seismic waves? (FREE POINT)