Landforms
Slow Changes
Properties of Soil
Fossil Fuels
Rapid Changes
100

A deep ravine between cliffs that is most often carved from the landscape by a river.

What is a Canyon?

100

When sediments are carried from one place to another.

What is Erosion?

100

The top layer of soil.

What is Topsoil?

100

A solid fossil fuels that is formed from the remains of plants over a very long periods of time.

What is Coal?

100

A sudden release of energy under Earth's surface that makes the ground shake or crack.

What is an Earthquake?

200

A finger-like landform where a river empties into another body of water.

What is a Delta?

200

When sediments are dropped off in a new location.

What is deposition?

200

A mixture of sand, silt, clay, rock and humus (plant and animal remains)

What is Soil?

200

A natural, nonrenewable fuel source such a coal. oil, or natural gas formed a very long time ago from the remains of living organisms.

What is Fossil Fuel?

200

A mountain or a hill made by hot rocks and gases moving to the surface of Earth from deep inside Earth.

What is a Volcano?

300

Hill formed by wind blowing and depositing sand.

What is a Sand Dune?

300

The breaking down of rocks into sediments.

What is weathering?

300

A component of soil made by the weathering of rocks into tiny grains; has a rough and gritty texture.

What is Sand?

300

A flammable material produced from remains of marine organisms buried under layers of sediment found near oil deposits.

What is Natural Gas?

300

The rapid, downward slide of rocks and mud.

What is a Landslide?

400

Low-lying area between two hills or mountains may of been formed by glacier erosion.

What is a Valley?

400

Pressure from the above sediments packs the layers tight.

What is Compaction?

400

A component of soil made of very tiny grains; sticky and soft when wet but turns hard when dry.

What is Clay?

400

A liquid nonrenewable natural resource produced from the remains of organisms buried under layers of sediments for millions of years.

What is Oil?

400

A large rotating store with high speed winds that form over warm waters in tropical areas.

What is a Hurricane? 

500

Areas of flatland that you would find heavily populated big cities.

What are the Plains?

500

Over thousands of years minerals and pressure harden sediments into sedimentary rock.

What is Cementation?

500

A component of soil make of small pieces of rock; pebbles; usually has a smooth texture.

What is Gravel?

500

The waste and remains of plants and animals.

What is Organic Matter?

500

A mobile, destructive vortex of violently rotating winds having the appearance of funnel-shaped cloud.

What is a Tornado?

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