Weathering, Erosion, Deposition

What are sediments?

• big pieces of rocks that get eroded

• small, solid pieces of material that come from rocks

The top layer of soil is called

• topsoil

• soil

• subsoil

Humus is..

• the top layer of soil

• decaying of organic matter

• food

• bedrock or the bottom layer of soil

How do plants and animals help contribute to the formation of soil? They

• use soil to grow and develop over time.

• support the animal life in the soil.

• decompose and become part of soil

What is weathering?

• The movement of broken down objects

• the breaking down of objects.

• waves carrying fish to a new place

Tags

NGSS.MS-ESS2-4

What is erosion?

• The process in which sediment is deposited in a different place

• The process in which sediment is move from one place to another

• The process in which rock is broken

Tags

NGSS.MS-ESS2-2

What is deposition?

• Materials being decomposed by worms, fungi, etc.

• The dropping off of sediment in a new place

• The act of sediment being carried someplace else by erosion

Which statement is true?

• Boulders and sediment are the same

• Sediment is a liquid that flows in the water

• Water quickly changes into sedimentary rock

• Sediment can be moved by either wind or water

How do sand dunes form?

• The wind deposits sand and it builds up over time

• Ancient rivers erode rocks to form sand dunes

• A volcanic eruption deposited the sand

• People created paths and eroded the sand

Tags

NGSS.MS-ESS2-2