Most of the rocks shown were formed by

• volcanic eruptions and crystallization

• compaction and/or cementation

• heat and pressure

• melting and/or solidification

Which two rocks are composed primarily of quartz, feldspar, and clay minerals?

• rock salt and conglomerate

• rock salt and breccia

• sandstone and shale

• sandstone and limestone

Which table shows the rocks correctly classified by texture?

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The diagram below shows a drill core of sediment that was taken from the bottom of a lake. Which types of rock would most likely form from compaction and cementation of these sediments?

• sandstone and limestone

• shale and coal

• breccia and rock salt

• conglomerate and siltstone

Tags

NGSS.MS-ESS2-1

Which rock was organically formed and sometimes contained fossilized plant impressions?

• rock gypsum

• phyllite

• breccia

• bituminous coal

Which rock is made up of the largest particles?

• conglomerate

• sandstone

• shale

• rock salt

Which type of rock most likely contains fossils?

• scoria

• gabbro

• schist

• shale

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

The rounded pebbles of this rock have been cemented together to form

• granite, an igneous rock

• conglomerate, a sedimentary rock

• siltstone, a sedimentary rock

• gneiss, a metamorphic rock

The processes that form sedimentary rocks are (Hint: There are multiple ones!)

What sedimentary rock is made from the cementation and/or compaction of sediments that are 0.03 cm to 0.1 cm in size?