Earth Layers and Soil Composition

In our study of the Earth, how many layers does it have?

• 1

• 2

• 3

• 4

The thinnest layer of the Earth is the ___________.

• mantle
• crust
• core

What layer is broken into plates like a puzzle because of the movement of the hot mantle?

• Core

• Crust

• Mantle

What is the center of the Earth called?

• Mantle

• Crust

• Biosphere

• Core

Which layer of the Earth is the hottest?

• Crust

• Mantle

• Core

The dark top layer of soil is called ______.

• subsoil
• bedrock
• topsoil
• understory

Which of the following best describes soil erosion?

• A.  the breakdown of soil 
• A.  the improvement of soil
• A.  the addition of soil
• A.  the movement of soil by wind or water

Tags

NGSS.4-ESS2-1

Water gets into the cracks of rock and freezes, causing the rock to break.  What is this an example of?

• erosion
• weathering

Tags

NGSS.MS-ESS2-2

Humus is.....

• the dead parts of plants and animals in soil.
• A food we eat with pretzels.
• The tiny particles inside of soil
• The roots that come off of a plant and live in soil.

Tags

NGSS.MS-LS2-3

What is soil?

• It is the loose material in which plants can grow in the upper layer of Earth.

• It is the leaf that grows on the plant.

• It is the food that can be found inside the seed.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-5