Rocks, Soils, and effects of water and wind

What is a mineral?

• nonliving solid that has a crystal form

• a rock with a hardness of 10

• soil that has hardened and formed a rock

• a solid that is made from tiny pieces of rock

Roughness describes which property?

• luster

• hardness

• texture

• color

Which material is a mixture of water, air, pieces of rock, and dead plants and animals?

• nutrients

• humus

• soil

• sand

Tags

NGSS.MS-LS2-3

The particles of rock in soil are different sizes. Which list shows rock particles in soils in order from biggest particles to the smallest particles?

• clay, sand, loam

• clay, loam, sand

• sand, loam, clay

• sand, silt, clay

Nina is classifying a group of rocks. She observes the rocks to find out how light reflects off the rocks' surfaces. Nina is most likely classifying the rocks based on which property?

• texture

• color

• luster

• hardness

How is the girl using soil?

• to build homes

• to grow plants for food

• to give water and light to plants

• to break down rocks into smaller pieces

Tags

NGSS.MS-LS1-5

What is weathering?

• the changing of soil into layer of rock

• the moving of soil from one place to another

• the breaking down of rocks into smaller pieces

• the cracking apart of rocks with freezing water

Which soil has a high capacity to retain water?

• sand

• silt

• loam

• clay

Which type of soil has a low capacity to retain water?

• loam

• clay

• sand

• silt

Valerie has a rock. She can scratch the rock with her fingernail but not with a still nail. Which conclusion is best supported by the information that Valerie observes about the rock?

• The rock has a smooth texture.

• The rock has a rough texture.

• The rock has a hardness between 7 and 10.

• The rock has a hardness between 1 and 2.