Minerals SC.4.E.6.1 and SC.4.E.6.2

Theo drew the poster shown. How can students in Theo's class tell that the shale rock shown is sedimentary rock?

• There are pieces of fossils and shells in the layers of rock.

• It was formed from layers of molten magma below the rock layers.

• It was formed through weathering of other rocks.

• The shale was formed from heat and pressure from the surrounding rock.

Min’s backyard has pieces of slate rock that are used as a footpath. Slate is a metamorphic rock that splits into flat pieces. What natural forces in Earth cause the formation of slate?

• Molten magma deep inside Earth cools and slowly hardens over time.

• Great heat and pressure cause the minerals to line up in parallel layers

• Lava erupts and runs down the side of a volcano, then cools and hardens.

• Sediments of once living things are deposited over time and become cemented.

Douglas has a piece of limestone in his rock collection. He knows that limestone is a sedimentary rock. Which of the following is true about Douglas’s piece of limestone rock?

• It has no minerals.

• It is made up of layers.

• It was formed from magma

• It was formed from volcanic lava.

Mr. Kozlow’s science class is making a chart of different kinds of rocks as shown.

Which of the rocks were most likely formed from the cooling of molten lava?

• basalt and pumice

• basalt and sandstone

• pumice and sandstone

• pumice and shale

Carly learns that rocks can change from one form to another. Weathering is one way that rocks change form. Which of the following classes of rocks is formed from the pieces left over from the weathering of rocks over many millions of years?

• igneous

• metamorphic

• sedimentary

• volcanic