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33 Cards in this Set
- Front
- Back
Name the four layers of the Earth's surface.
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Crust
Mantle Outer Core Inner Core |
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What is the uppermost layer of the Earth's surface?
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The Crust
It is made up of rock that floated to the surface when the Earth was formed. |
|
True or False
The Earth's Crust is a continuos layer? |
False
The Earth's Crust is not a continous layer but it is made up of large masses called tectonic plates. |
|
The land part of the Earth's crust is called ____________.
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the Continental Crust
|
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What is the name of the layer of the Earth's surface that we walk around on?
|
The Crust
|
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"Tectonic" means __________.
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Moving
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The Earth's Crust is made up of __________ _________.
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Tectonic plates
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The Continental Crust is between ____ to ____ miles thick, although it goes up to 45 miles in some places.
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10 to 15 miles
|
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The land part is divided into how many continents?
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Seven
|
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the water part of the Earth's Crust is at the bottom of the __________.
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Oceans
|
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The water part of the Earth's Crust is called the _________.
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Oceanic Crust
|
|
The Oceanic Crust is between ____ and _____ miles thick.
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4 to 7 miles
|
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The crust is composed of
|
granite
basalt quartz calcium magnesium carbon dioxide clay and iron |
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The second layer of the Earth's surface is called the ____________.
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the Mantle
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The Mantle is divided into two parts _____ and the _______.
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Outer Mantle (or upper)
and the Inner (or lower) mantel |
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The Upper Mantel is made up of silicates of _____ and __________.
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iron & magnesium
|
|
True or False
The Upper Mantel is firm on top with liquid rock on the bottom. |
TRUE
|
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Scientist refer to the top part of the Upper Mantle and the Crust together as the _________.
|
Lithosphere
|
|
True of False
The Lithosphere is the coldest, most brittle of the Earth's layers. |
TRUE
|
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True of False
The Inner Mantle is on top of the Upper Mantle. |
FALSE
Beneath the Upper Mantle lies the Inner (lower mantle). It is the layer closest to the Earth's Core. |
|
The Inner Mantle is composed of
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aluminium
melted rock iron magnesium calcium |
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The center of the Earth is called the
|
Core
|
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The Core of the Earth is a dense metallic ball made mostly of _____ and some ________.
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iron with some nickel.
|
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True or False
The CORE is made up of two parts - the Inner Core and the Outer Core. |
TRUE
|
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The Outer Core is about ________ to ______ miles beneath the Earth's surface.
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1,800 to 3,200 miles
|
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The Outer Core is made up of
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iron
nickel sulfur oxygen |
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True or False
The Outer Core is cooler than the Inner Core? |
True
Since it is cooler, the outer core remains a LIQUID. |
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The Inner Core is about _____ miles thick.
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7800 miles
|
|
It is about _______ to ________ miles beneath the Earth's surface.
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3,200 to 3,960 miles
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True or False
The Inner Core is very cold. |
FALSE
The Inner core is VERY HOT! But the pressure is so great it remains a SOLID. |
|
True or False
The Inner Core radiates currents of heat upward toward the upper layers of the Earth's surface. |
TRUE
|
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Movement of tectonic plates cause
a. volcanic eruptions b. earthquakes c. mountain buildings d. All of the ABOVE |
D. all the above
|
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Crust 10-25 miles / 1600 degrees
Mantle 1800 miles / 1600 to 4000 degrees Outer Core 1430 miles / 4000 to 9000 degrees Inner Core 780 miles radius / 9000 degrees |
Crust 10-25 miles / 1600 degrees
Mantle 1800 miles / 1600 to 4000 degrees Outer Core 1430 miles / 4000 to 9000 degrees Inner Core 780 miles radius / 9000 degrees |