Review: Soils, Rocks, and Landforms

What is soil made of?

(Select 2.)

• roots

• humus

• bugs

• wood

• rocks

What is humus made of?

• chickpeas

• garbanzo beans

• dead plants and animals (organisms)

• cheese

Please put these rocks in soil in order by size from largest to smallest.

​ ​ ​ ​

• gravel

  pebbles

  sand

  clay

• pebbles

  gravel

  clay

  sand

• clay

  sand

  gravel

  pebbles

• pebbles

  gravel

  sand

  clay

How do rocks get into the soil?

What happens 1st, 2nd, and 3rd?

• 1. 1. erosion

  2. 2. weathering

  3. 3. deposition

• 1. 1. weathering

  2. 2. erosion

  3. 3. deposition

• 1. 1. deposition

  2. 2. weathering

  3. 3. erosion

• 1. 1. erosion

  2. 2. deposition

  3. 3. weathering

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Which is the most common in the soil of a mountain?

• clay/silt

• pebbles

  (and gravel)

• sand

• humus

Which is the most common in the soil of a desert?

• clay/silt

• pebbles

  (and gravel)

• sand

• humus

Which is the most common in the soil of a forest?

• clay/silt

• pebbles

  (and gravel)

• sand

• humus

Which is the most common in the soil of a river delta?

• clay/silt

• pebbles

  (and gravel)

• sand

• humus

Why is there so much clay at a river delta?

• A lot of plant and animal life there

• Not eroded yet

• Blown there by wind

• Deposited by water when it slows down

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Why is there so much sand in the desert?

• A lot of plant and animal life there

• Not eroded yet

• Blown there by wind

• Deposited by water when it slows down