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Layers of the Earth
Layers of the Earth
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1
What is the explanation for the density of different layers of Earth?
When Earth formed, heavier materials settled to the center.
The rock cycle causes lighter rocks to move upward.
Atmospheric pressure affects the density of the layers.
Heat in the interior of Earth increases the density.
2
The core of Earth is divided into two layers. The outer core is made of ________.
Molton iron and nickel
Silicate Rocks
Solid iron and nickel
Basalitic rocks
3
The inner core of Earth is solid because of the ________.
rate of rotation.
magnetic field
amount of pressure
extreme temperature
4
Which of these correctly lists Earth’s layers in order from the center to the surface?
asthenosphere,lithosphere, outer core, inner core
innercore, outer core, asthenosphere, lithosphere
innercore, asthenosphere, lithosphere, outer core
outercore, inner core, asthenosphere, lithosphere
5
Which section of Earth is composed primarily of liquid metal?
mantle
inner core
crust
outer core
6
Which is the thickest layer of the earth?
the outer core
the mantle
the crust
the inner core
7
Due to extreme pressure, the inner core of Earth is ______.
solid
liquid
plasma
gas
8
The continental crust floats on top of the mantle because the crust is _______.
less dense than the mantle.
made of a liquid material.
separated from the mantle by a layer of water.
made up of oxygen which is a light element.
9
Which layer of a model of earth's layers should be the thinnest layer?
the layer representing the mantle
the layer representing the inner core
the layer representing the crust
the layer representing the outer core
10
Where are sedimentary rocks most likely to be found?
deep under the earth's surface, in the mantle
inside the earth's core
at the earth's surface
under mountain ranges
11
When compared with the others layers, which layer has the lowest density?
outer core
inner core
crust
mantle
12
What evidence best supports this model of Earth's internal structure.
evaluations of seismic data
explanations of the rock cycle
samples of rocks from the layers
direct observations of the layers
13
What best describes the mantle of Earth?
a thin layer that is located on the surface
the largest layer between the crust and outer core
the smallest layer that is made up of molten rock
a solid layer made of iron and nickel
14
Name the center of Earth and give one of its characteristics.
Mantle: Made of Iron and Nickel
Core: Made of Iron & Nickel
Mantle: Made of Silicon and Oxygen
Core: Made of Silicon and Oxygen
15
Which type of rock forms by weathering?
extrusive rock
igneous rock
sedimentary rock
metamorphic rock
16
Which layer of Earth consists of iron and nickel in a solid state?
Crust
Outer Core
Inner Core
Mantle
17
Which type of matter does the circlegraph most likely represent?
Earth's Crust
Ocean water
Living organisms
Earth's atmosphere
18
In what section of Earth do earthquakes happen?
A.Crust
Outer Core
Mantle
Inner Core
19
Diamonds are formed when carbon is placed under extreme heat & pressure. This process occurs _.
in the ocean
in the atmosphere
beneath the surface of the earth
in caves
20
Which of the following has the greatest direct influence on movement of the lithosphere?
the Sun
Earth’s mantle
the Moon
Earth’s core
