GOL 105 Ch. 16-18 Review Flashcardizz

Front

What is obliquity?

Back

Obliquity refers to the tilt of Earth's orbit changing from 22.5 to 24.5 degrees.

Front

How does a glacier modify a valley formed by a river?

Back

Glaciers can reshape valleys by eroding the landscape, creating U-shaped valleys and leaving behind features like moraines.

Front

Which of the following is NOT a dripstone feature?

Back

Sinkholes are not considered dripstone features; stalactites and stalagmites are.

Front

How did the large boulders in Central Park arrive there?

Back

They were carried by glaciers and dropped as glacial erratics.

Front

What is porosity in geological terms?

Back

Porosity is the amount of open space in rock or sediment.

Front

What is the significance of glacial erratics?

Back

Glacial erratics are boulders that have been transported by glacial ice and deposited in a different location, providing evidence of past glacial activity.

Front

Define the term 'dripstone'.

Back

Dripstone refers to mineral formations that occur in caves, such as stalactites and stalagmites, formed by the deposition of minerals from dripping water.

Front

What is the difference between stalactites and stalagmites?

Back

Stalactites hang from the ceiling of caves, while stalagmites grow from the ground up.

Front

What role do rivers play in shaping landscapes?

Back

Rivers erode land, transport sediment, and deposit materials, creating features like valleys, deltas, and floodplains.

Front

Explain the concept of erosion.

Back

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