Gradual Earth Changes Sudden Earth Changes Landforms Natural Resources The Earth 100 200 300 400...
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Gradual Earth Changes Sudden Earth Changes Landform s Natural Resource s The Earth 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500
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Transcript of Gradual Earth Changes Sudden Earth Changes Landforms Natural Resources The Earth 100 200 300 400...
Gradual Earth
Changes
Sudden Earth
ChangesLandforms
Natural Resources
The
Earth
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
The gradual breaking down of rock into smaller pieces by water and wind is called
Weathering
The movement of weathered particles is called
Erosion
Small particles of silt, sand, and soil are called
Sediment
A large mountain of ice that gradually travels downhill, changing the surface of the earth
as it goes, is called a
Glacier
When water gradually wears away rock underground, this can form.
A cave (or a sinkhole)
The movement of the earth’s plates can cause
Volcanoes and earthquakes
A mountain that forms as lava flows through a crack in earth’s surface is a
Volcano
A type of volcano that is made of layers of lava, rock and ash and erupts explosively
is a
Composite volcano or Stratovolcano
The shaking of earth’s surface due to the movement of rock in the crust is
An earthquake
When great amounts of soil and rock slide down a slope due to water and gravity or
an earthquake, it is called a
Landslide
When two of the earth’s plates meet, sometimes the edges crush and fold. This
creates
A mountain chain (or mountains)
Are landforms usually created by the earth changing rapidly or slowly?
Slowly
An area with higher land around it, and that stretches between mountains or hills is a
Valley
The Grand Canyon was caused by
Water erosion
Two landforms caused by the movement of sand and sediment are
Deltas and dunes
Naturally occurring materials that humans can use for energy, building, growing
crops, etc. are
Natural resources
Natural resources that cannot be replaced are called
Non-renewable resources
A type of soil that can be used to make bricks and pottery is
Clay
Sources of energy, such as coal and oil, that come from the remains of ancient oceans
or swampy forests are called
Fossil fuels
Two examples of hard rocks that can be used for building, statues, etc, are
Granite and marble
Earth has three main layers. They are:
The crust, the mantle, and the core
The earth’s crust is broken into sections called
Tectonic plates (or just plates)
Cracks in the earth’s crust are called
Faults
Melted rock within the earth is called
Magma
Scientists can predict earthquakes by using an instrument called a
Seismograph
