Earth's Layers Standard Notes

Earth's Layers Standard Notes

Assessment

Flashcard

Science

7th Grade

Practice Problem

Hard

Created by

Samantha Lamosa

FREE Resource

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14 questions

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1.

FLASHCARD QUESTION

Front

What is the Earth's crust?

Media Image

Back

The outer layer of the earth, similar to the skin on an apple (thinnest layer), made up of both continental (land) and oceanic crust (under the ocean).

2.

FLASHCARD QUESTION

Front

What is the lithosphere?

Media Image

Back

The solid, outer section of the Earth, which includes the crust (rocky layer) and the cool, dense, rigid upper part of the mantle.

3.

FLASHCARD QUESTION

Front

What is the asthenosphere?

Media Image

Back

The solid part of the upper mantle, weaker and less rigid (plasticity, like silly putty), over which the crust moves. These plates crash into each other.

4.

FLASHCARD QUESTION

Front

What is the oceanic crust?

Media Image

Back

A thin layer of crust over the ocean basins, more dense than continental crust, mostly basalt rock, thinner and younger than continental crust.

5.

FLASHCARD QUESTION

Front

What is the continental crust?

Media Image

Back

A layer of rock which forms the continents, less dense than oceanic crust, mostly granite, thicker and older than oceanic crust.

6.

FLASHCARD QUESTION

Front

What is the mantle?

Media Image

Back

The largest layer of the Earth, under the crust about 2,890 km, composed of silicate rocks rich in magnesium and iron. Intense heat causes convection, moving the crust.

7.

FLASHCARD QUESTION

Front

What is the outer core?

Media Image

Back

A liquid layer about 2,300 km thick, second largest, composed of liquid iron and nickel, between inner core and mantle. Movement creates Earth's magnetic field.

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