Science Review

If you classified a rock based on its luster, you grouped it by...

• the age of the rock.

• the size of the rock.

• how shiny the rock is.

• the hardness of the rock

Students brought in rock samples from home. One rock was found on a hiking trail and the other rock was found in a river bed. Which statement is true about the rock found in a river bed?

• The rock from the river bed is sharper because the rushing water broke apart cracks in the rock.

• The rock from the river bed is smoother because the rushing water wore away pieces of the rock.

• The rock from the river bed is sharper because the rushing water added more hard pieces to the rock.

• The rock from the river bed is smoother because the rushing water melted the sharp edges of the rock.

Tags

NGSS.MS-ESS2-2

Which of the follow can move soil a great distance?

• wind

• sun

• trees

• worms

Tags

NGSS.MS-ESS2-2

Which soil looks like it has the least organic matter in it?

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• 
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Which sample can hold more water right or left? Why

• The soil on the left because it has less texture.

• The soil on the right because it has more texture.

• The soil on the left because it has larger particles.

• The soil on the right because it has smaller particles

Tags

NGSS.MS-ESS2-4

How would you classify this rock based on color, luster, and texture?

• dark color, dull luster, smooth texture

• light color, shiny luster, smooth texture

• dark color, shiny luster, rough texture

• light color, dull luster, smooth texture

Which property of the rocks was changed by the rushing water?

• hardness

• luster

• color

• texture

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

If Rock A can scratch Rock B, but Rock B cannot scratch Rock A, what is true about the rocks?

• Rock A is smoother than Rock B

• Rock A is rougher than Rock B

• Rock A is harder than Rock B

• Rock A is softer than Rock B

Because of weathering and erosion, we know rich soil moves from hillsides and mountains to plains and valleys below. Using what we know, which of the following would be best for farming and growing crops?

• plains and valleys that get more sunlight

• plains and valleys that have rich soil deposits

• mountains and hills because they are closer to the sun

• mountains and hills because they get more rain

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

What kind of soil is smooth, wet, and can be molded into many shapes?

• sand

• gravel

• clay

• potting soil