Earth - Flashcard 12-6-24

Front

What types of sediment build up in river deltas?

Back

Silt, sand, and clay.

Front

How does mechanical weathering contribute to delta formation?

Back

It breaks rocks into smaller particles transported to deltas.

Front

What is a river delta?

Back

A sediment deposit formed where a river meets a larger body of water.

Front

How do extrusive rocks differ from intrusive rocks?

Back

Extrusive rocks cool quickly on the surface, creating fine-grained textures.

Front

How does chemical weathering differ from mechanical weathering?

Back

Chemical weathering changes the mineral composition of rocks.

Front

What is mechanical weathering?

Back

The process of breaking rocks into smaller pieces without changing their chemical composition.

Front

What is chemical weathering?

Back

The process that alters the mineral composition of rocks through chemical reactions.

Front

What role do rivers play in sediment transport?

Back

Rivers transport sediments from higher elevations to lower areas, contributing to delta formation.

Front

What is the significance of river deltas in ecosystems?

Back

River deltas provide rich habitats for wildlife and are crucial for biodiversity.

Front

What factors influence the formation of a river delta?

Back

Sediment supply, river flow, and the characteristics of the body of water it meets.