Comparing Igneous Rocks Geology Worksheet

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Comparing Igneous Rocks

STUDENT RESOURCE 3.2

ACTIVITY SHEET

Each row in the chart lists a pair of rocks.

Tell how the rocks in each row are alike and different. Describe

how they are alike in the box that begins “Both.” Describe how

they are different in the boxes that have “Only” in the labels.

Use the magniﬁer to observe the rocks. Describe how they look

and feel. Then describe how the rocks were formed. Be sure to

write in every column.

Pumice Only

Both Pumice and Obsidian

Obsidian Only

Basalt Only

Both Basalt and Scoria

Scoria Only

Granite Only

Both Granite and Basalt

Basalt Only

ROCKS, EROSION, AND WEATHERING • SECTION 3 IGNEOUS ROCKS

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