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Earth's Spheres
Sphere Temperatures
Layers of the Earth
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Boundaries
100

The sphere of the Earth that includes living organisms

What is biosphere?

100
Which layer is the coolest?
What is the crust?
100

The number of layers the Earth has

What is 4

100

Caused by very hot material at the deepest part of the mantle rising, then cooling, sinking again, and then heating, rising, and repeating the cycle causes the plates to move.

Convection Currents

100

When 2 tectonic plates come together

convergent boundary

200

This sphere includes all the liquid water on earth.

The Hydrosphere

200
Which layer is the hottest?
What is the core?
200

The largest layer of the earth. It is composed of very hot dense rock.

What is the Mantle

200
The lithosphere is broken into sections called _________.
What is tectonic plates?
200

When 2 tectonic plates pull apart

Divergent boundary

300

This sphere includes all the rocks on the crust

The Geosphere

300
Which layer is warmer, The lithosphere or the asthenosphere?
What is the asthenosphere?
300

What are the 4 layers of the Earth?

Inner Core, Outer Core, Mantle, Crust

300
The lithosphere is broken into sections called plates, which float on top of the _____________.
What is the asthenosphere?
300

When 2 tectonic plates slide against each other

Transform boundary

400

78% of this sphere is Nitrogen

The atmosphere

400
Which layer is warmer, The outer core or the inner core?
What is the inner core?
400

The thinnest layer

The Crust

400

The inner core is composed of solid ____________.

Iron

400

What do convergent boundaries cause? Be specific!

continental to continental- mountains

oceanic to oceanic- trench

continental to oceanic- subduction (volcanoes)

500

List the 4 spheres

Biosphere Hydrosphere Geosphere and Atmosphere

500
What happens to temperatures as you go deeper into the Earth?
What is they increase or get higher?
500

The crust and the upper layer of the mantle together make up this zone of rigid, brittle granite, and basalt.

The Lithosphere

500

Earth’s solid inner core is surrounded by the hot, molten metal of which layer?

The outer core
500

Explain seafloor spreading

It is when new crust (lithosphere) is created as the plate separate and magma comes up, cools and hardens to make new crust