Science Penguin:Earth & Space Vocabulary 5.7B

Front

What is a delta?

Back

A delta is a triangular shaped landform at the mouth of a river, formed by the deposition of sediment carried by the river as the flow velocity decreases.

Front

How are deltas formed?

Back

Deltas are formed by water erosion and deposition, where sediment is dropped off at the river's mouth.

Front

What is a sand dune?

Back

A sand dune is a mountain of sand formed by the deposition of sand, typically shaped by wind.

Front

How are sand dunes formed?

Back

Sand dunes are formed by wind erosion and deposition, where wind moves sand and deposits it in mounds.

Front

What is deposition?

Back

Deposition is the dropping of sediment in a new location, often leading to the formation of landforms like deltas and sand dunes.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by wind, water, or ice.

Front

What is the difference between erosion and deposition?

Back

Erosion involves the removal of sediment, while deposition involves the dropping of sediment in a new location.

Front

What are the main causes of erosion?

Back

The main causes of erosion include water (rivers, rain), wind, and ice (glaciers).

Front

What is a landform?

Back

A landform is a natural feature of the Earth's surface, such as mountains, valleys, plateaus, and deltas.

Front

What is sediment?

Back

Sediment is small pieces of rock, soil, and organic material that are transported by wind, water, or ice.