Adam brought the rock below to school one day. We found fossils of ocean plants and shells in the rock. What does this tell us about the rock?

• The rock needs to be washed off.

• The rock was once at the bottom of the sea.

• The rock is heavier than most rocks.

• The rock is gray and brown.

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What is an object that is solid, formed in nature, and has never been alive?

• hardness

• mineral

• erosion

• tree

A student saw sharp rocks on his way to a stream, and saw smooth rocks in the stream. Why were the rocks in the stream smoother?

• because wind wears down rocks

• because moving water wears down rocks

• because wind breaks rocks into smaller pieces

• because moving water breaks rock into smaller pieces

Which of the following would NOT be responsible for the breaking down of rocks into smaller pieces?

• Plant roots that invade the rocks

• The freezing and thawing of water that seeps into the rocks

• Waves that continually beat upon the rocks

• The spinning of the Earth

To determine the hardness of a mineral, we use the ________.

• Streak test

• A magnifying glass

• Mohs Scale

• Weight scale

Rocks and minerals can be used for all of the following EXCEPT:

• Jewelry

• Buildings

• Seasoning for food

• Mattresses

Which type of soil generally has the largest particle size and lets water pass through it easily?

• Clay

• Loam

• Sandy soil

Which type of soil has the smallest particle size and has a slippery or powdery texture?

• Clay

• Loam

• Sandy soil

Loam is good for growing crops because:

• It contains a mixture of all soils

• It can hold water

• It has a lot of minerals

• All of above are correct

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which mineral has a hardness of 1 on the Mohs scale?

• Gypsum

• Talc

• Diamond

• Quartz