Igneous Rocks Guided Notes Review

1. 1. Select the letter of the definition of igneous rock.

• Rock that forms from minerals

• Rock that contains iron

• Rock that forms from magma or lava

• Rock that contains crystals

2. 2. Complete the Venn diagram by labeling each circle with the type of rock it represents.

• A. Intrusive

  B. Extrusive

• Igneous and Sedimentary

• Igneous and Metamorphic

• A. Extrusive

  B. Intrusive

3. 3. Is the following sentence true or false? Extrusive rock forms beneath Earth's surface.

• True

• False

4. 4. Circle the letter of each sentence that is true about basalt.

• It forms oceanic crust.

• It is the most common intrusive rock.

• It forms from lava.

• It forms beneath Earth's surface.

5. 5. Circle the letter of each sentence that is true about granite.

• It is the most abundant intrusive rock in continental crust.

• It forms the core of many mountain ranges.

• It forms from magma.

• It forms on top of the crust.

6. 6. The texture of an igneous rock depends on the size and shape of its _______.

• crystals

• minerals

• layers

• fossils

7. 7. Is the following sentence true or false?

Igneous rocks with similar mineral compositions always have the same textures.

• True

• False

#8-10 Match the type of texture of igneous rocks with how rocks of that texture form.

Which type of texture is associated with magma cooling slowly?

• Fine-grained

• Coarse-grained

• Porphyry rock

#8-10 Match the type of texture of igneous rocks with how rocks of that texture form.

Which type of texture is associated with lava cools rapidly.

• Fine-grained

• Coarse-grained

• Porphyry rock

#8-10 Match the type of texture of igneous rocks with how rocks of that texture form.

Which type of texture is associated with magma cools rapidly?

• Fine-grained

• Coarse-grained

• Porphyry rock