Show:
How Landforms Came to Be
Volcanoes Add Land
Shaping Earth's Surface
People Change Land
Layers of Earth
100
An idea about how Earth's landforms and continents came to be.
What is Plate Tectonics?
100
Heat in the mantle causes rock in the lower plate to melt forming this.
What is Magma?
100
The process of breaking up rocks into smaller pieces called sediment.
What is weathering?
100
This makes floodplains and deltas excellent for farming.
What is rich soil?
100
Earth is made up of layers similar to those of an ___________.
What is apple?
200
Earth's landmasses formed one huge supercontinent known as this.
What is Pangea?
200
When rock melts it produces these.
What is gases.
200
This is a major agent of weathering.
What is water?
200
In Asia, people raise this on mountain slopes.
What is Rice?
200
The outer layer is called this.
What is crust?
300
Forces within Earth that caused Pangea to break up into continental plates and drift apart.
What is Continental Drift?
300
The name for magma that has escaped onto the surface.
What is lava?
300
The process of moving sediment.
What is erosion?
300
People build these to control the flow of rivers and produce electricity.
What is dams?
300
Below Earth's crust and 1800 miles below Earth's surface is this.
What is Mantle?
400
A break in Earth's crust where movement occurs.
What is a fault?
400
Openings through which lava flows.
What is volcanoes?
400
The process of dropping or depositing sediment in a new location.
What is desosition?
400
This prevents erosion and keeps water from fields.
What is cutting into slopes to form flat fields?
400
This is at Earth's center.
What is a metal core?
500
This fault in the western United States if visible above the ground.
What is the San Andreas Fault?
500
Lava that flows easily can spread over great distances and from this kind of volcano.
What is Shield Volcano?
500
A triangle-shaped piece of land.
What is Delta?
500
In addition to nature _________ changes the Earth.
What is humans?
500
This surrounds the metal inner core.
What is Outer Core?