Changes to Earth/Landforms STAAR

Front

What is a landslide?

Back

A landslide is the movement of rock, earth, or debris down a slope due to gravity. It can occur suddenly and can be caused by factors like heavy rain, earthquakes, or volcanic activity.

Front

What does a model of a hill covered with clay and sugar cubes represent when hot water is poured over it?

Back

It represents the formation of caves in hills, as the hot water erodes the sugar cubes, simulating how water can create caves in real hills.

Front

What is compaction in geology?

Back

Compaction is the process where sediments are pressed together under pressure, leading to the formation of sedimentary rock.

Front

How is a valley formed?

Back

A valley is often formed by the movement of a glacier, which carves out the land as it moves.

Front

What is the Grand Canyon an example of?

Back

The Grand Canyon is an example of erosion, specifically by the Colorado River, which has carved out the canyon over millions of years.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow.

Front

What is a glacier?

Back

A glacier is a large mass of ice that moves slowly over land, shaping the landscape as it advances.

Front

What are sedimentary rocks?

Back

Sedimentary rocks are types of rocks that are formed by the accumulation and compaction of mineral and organic particles.

Front

What causes a flood?

Back

A flood is caused by an overflow of water onto normally dry land, often due to heavy rainfall, melting snow, or dam failure.

Front

What is the difference between a valley and a hill?

Back

A valley is a low area of land between hills or mountains, while a hill is a raised area of land.