STEM lab 208Rocks and Minerals

If a scientist states that a sample in the lab scored 10 on the "Mohs scale" after a scratch test, what property is she referring to for that mineral?

• It's shape.

• It's luster.

• It's texture.

• It's hardness.

If a scientist states that piece of pyrite has a metallic shine, what property is he referring to for that rock?

• It's shape.

• It's luster.

• It's texture.

• It's hardness.

1. Which substance makes up most of the Earth’s crust?

• sandstone

• humus

• rock

• saltwater

Tags

NGSS.MS-ESS2-2

True or False: Erosion refers to the movement of rock and soil to a new location.

• True

• False

Which of these following is not an example of a process in weathering or erosion ?

• wind

• waves

• animal digging

• pressure

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NGSS.MS-ESS2-2

What type of property test is a mineralogist conducting when she rubs a mineral over a mirror, tile, or hard surface?

• Streak Test

• Luster Test

• Appearance Test

• Cracking Test

True or False? Pyrite and gold will both leave a black streak with a hint of green color.

• True. Pyrite and gold are the same mineral.

• False. They both leave a golden streak.

• False: Pyrite leaves a blackish/green streak and gold leaves a golden/yellow streak.

• False: Pyrite leaves a golden/yellow streak and gold leaves a blackish/green streak.

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NGSS.MS-PS1-2

The humus in soil is dark brown and full of nutrients because...

• it is extremely wet.

• it is made from decayed plants and animals.

• it comes from sedimentary rock that was eroded and weathered.

• it is full of very old fossils.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Sinkholes form when...

• underground rocks explode.

• landslides push rocks away.

• bedrock, often made of limestone, dissolves

• plant roots push the ground apart

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Metamorphic rock is the result of

• layers of rock being under great pressure

• molten rock cooling over time

• pieces of rock and sediment pushing together

• fossils forming over thousands of years

Tags

NGSS.MS-ESS2-1