LAYERS OF THE EARTH

Question 1

Earth is made up of 3 main layers

Answer 1

• crust
• mantle
• core

Question 2

Composition =

Answer 2

what it’s made of

Question 3

Physical properties =

Answer 3

characteristic that is unique and helps to identify the substance (temp, size, shape, color)

Question 4

very thin

Answer 4

crust

Question 5

2 Types of Crust

Answer 5

continental crust
oceanic crust

Question 6

dry land, granite
less dense

Answer 6

Continental Crust:

Question 7

ocean floor, Basalt, thinner than cont. crust

Answer 7

Oceanic Crust:

Question 8

CRUST
–Physical Properties:
- Composition:

Answer 8

PHYSICAL PROPERTIES
•outermost layer
•thinnest layer

COMPOSITION
•consists of loose rocks
& soil

Question 9

MANTLE
–Physical Properties:
–Composition:

Answer 9

Physical Properties:
•thickest layer (2900km thick)
•1600-4000 F
•66% of earth’s mass
•flowing

Composition:
•Molten rock
–Magma

Question 10

CORE
–Physical properties:
–Composition:

Answer 10

–Physical properties:
•HOT! 4000-8000 F
•Very dense
•High pressure
•4000 miles from surface
•33% of Earth’s mass
•About the same size as
Mars

composition
•Iron and Nickel (metals)

Question 11

As you get deeper inside the Earth, temperature____

Answer 11

Increases

Question 12

As you get deeper inside the Earth, pressure ____

Answer 12

Increases

Question 13

outermost layer – includes crust and uppermantle
•rigid
•divided into pieces or tectonic plates
•Rocks and soil

Answer 13

Lithosphere

Question 14

Middle Mantle
•composed of ____
•layer on which pieces of lithosphere____(solid rock that flows)
–Think of it like ___

Answer 14

Asthenoshere
• solid flowing rock
• move on top
- caramel

Question 15

Bottom Mantle
•strong, lower part of the mantle
•layer between asthenosphere and core

Answer 15

Mesosphere

Question 16

Outer and Inner
• is divided into two parts
–Outer Core: Liquid iron and nickel that’s spinning
–Inner Core: Solid iron and nickel
•Solid because of all the pressure of the rest of the Earth surrounding it.

Answer 16

The Core

Question 17

produced by earthquakes travel at different
speeds through solid rock and liquids

Answer 17

Seismic waves

Question 18

Layers of the earth

Answer 18

Crust
Mantle
Outer core
Inner core