P1 I-Check 1-2

Some students are testing rock samples they collected. If you wanted to test these rocks for calcite, what would you put in the bottle and what would you expect to happen if calcite is there?

• Put water in the bottle; if there is calcite, the rock will dissolve.

• Put salt water in the bottle; if there is calcite, the rock will turn a darker color.

• Put acid in the bottle; if there is calcite, the rock will fizz.

• Put liquid soap in the bottle; if there is calcite, the liquid will form a dome on the rock.

Consider the following diagram of a river flowing through a landscape. A rain storm causes a large amount of water to flow through the river in a very short time.

Which size sediments would you most likely  nd at each location, X,Y, and Z? Explain why

The diagram above shows two rock columns.

A mining company is sending a team to Paradise Canyon to drill down below Kimi Sandstone. What kind of rock do you think they will  nd directly under the Kimi Sandstone?

• Sunshine Shale

• New York Limestone

• Purple Sandstone

• American Shale

Surprise Canyon is located between these two canyons, 20 kilometers away from Vacation Canyon and 15 kilometers away from Paradise Canyon. What kind of rock do you think you might find at the top of Surprise Canyon?

• Sunshine Shale

• New York Limestone

• Purple Sandstone

• American Shale

Which explanation best describes how a boulder can turn into silt as it moves down a river?

• Water washes over the boulder until it is silt-sized.

• The boulder hits other rocks or objects and breaks apart

• The boulder moves down the river until it lands in a basin and becomes silt

• A chemical reaction turns the boulder into silt.

You find some soil that is mostly made of clay and silt, but no sand. How might this soil have formed?

• Slow-moving water carried the sand downstream and left behind the silt and clay

• Wind blew all the sand away, leaving behind the silt and clay particles

• Silt, clay, and organic material settled out of slow-moving water

• A fast-moving stream washed away all the sand

Describe the features of your favorite landform.

Use the cross-section drawing to answer the following items.

The Colorado River started eroding the Grand Canyon 6 million years ago. Of the layers shown at location X, which two layers did the Colorado River erode away first?

• Kaibab Formation and Toroweap Formation

• Redwall Limestone and Supai Group

• Bright Angel Shale and Tapeats Sandstone

• All layers are eroded at the same time by the Colorado River