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55 Cards in this Set
- Front
- Back
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Earth is made up of four ---.
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layers
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The innercore is made up of
--- and ---. |
iron and nickel
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The --- is the thickest layer of Earth.
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mantle
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Which layer of the Earth is made up of hot liquid metal?
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the mantle
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Which layer of the Earth is at the very center of Earth?
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the inner core
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Which layer of the Earth is the thickest?
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the mantle
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The Earth is --- miles in diameter
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8,000 miles
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The --- is made up of many kinds of rock, such as granite, sandstone, and marble.
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crust
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The --- is very hot at about 9,000 degrees F.
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mantle
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The --- is about 1,800 miles thick.
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mantle
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The --- is about 20 miles thick in most places, but it can be as little as 5 miles thick.
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crust
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The inner core is --- rock because it is under so much pressure from above.
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solid
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The surface of Earth is made up of large sections called
---. |
plates
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--- move toward each other, away from each other, or past each other.
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Plates
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Many of Earth's features are formed by the motion of ---.
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plates
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The plates --- on the hot liquid rock of the mantle below them.
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rest
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Most plates move from --- to
--- a year. |
1/4 inch to 4 inches
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The line where two plates pass each other is called a
---. |
fault
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The Eurasian, the African, and the South American --- are three of the major of Earth.
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plates
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It takes millions of years for --- to form.
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mountains
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Mountains can be formed when plates that make up Earth's crust ---.
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move
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What kind of mountain is formed when rocks break into blocks?
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fault-block mountains
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What kind of mountain is formed when a plate bulges?
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a dome-shaped mountain
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What kind of mountain is formed when lava cools and piles up?
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a volcanic mountain
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What kind of mountain is formed when the crust folds to form peaks?
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a fold mountain
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Most mountains are formed in groups called ---.
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ranges
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Dome-shaped mountains are usually --- mountains.
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low
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Mountains in ranges usually have about the same ---.
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shape
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The longest mountain range in the world is the ---.
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Andes
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Fault-block mountians are formed when broken rock is
--- along a fault line. |
pushed up
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A --- is a shaking of the surface of Earth.
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earthquake
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A --- is the place where two plates meet.
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fault
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Most earthquakes are caused by the sudden movement of --- along a fault.
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plates
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A tsunami is a giant ---.
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wave
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Above one --- earthquakes happen every year.
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million
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Most earthquakes are too --- to notice.
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small
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A fault is the place where two --- meet.
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plates
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In a --- earthquake, the ground can shake violently and even spilt open.
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strong
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When the plates move, the crust near the --- is squeezed and stretched.
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fault
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The --- is ually less than 25 miles below the surface.
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focus
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The --- is directly above the focus on the crust.
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epicenter
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The Ring of Fire is a chain of --- zones and volcanoes that circles the Pacific Plate.
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earthquake
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When the plates of Earth collide, sometimes a --- is formed.
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volcano
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In a quiet eruption, --- flows slowly out of the volcano.
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lava
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A volcanic rock about the size of a golf ball is called a ---.
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cinder
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A cinder --- is made when a volcano erupts violently and throws cinders out the top.
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cone
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A --- volcano is formed when cinderes make up some layers and lava flows make up other layers.
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composite
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A --- is an opening in a volcano.
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vent
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When a vent is plugged, --- builds up inside the volcano.
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pressure
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IN a hot spring, hot water and --- escape from the ground.
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steam
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Hot springs are sources of
--- energy. |
geothermal
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