Igneous Rocks

Open Ended

What do you already know about how Igneous rocks are formed?

Multiple Choice

What is lava?

• Melted rock that exits a volcano.

• A type of crystal found in rocks.

• A gas that forms in volcanoes.

• A type of sediment.

Fill in the Blanks

Extrusive igneous rock is formed at the

of Earth.

Multiple Choice

Which of the following rocks forms from the very rapid cooling of volcanic lava and does not have crystals?

• Obsidian

• Granite

• Pumice

• Basalt

Multiple Choice

Which of the following statements about pumice is correct?

• It is light colored and forms quickly when lava cools.

• It forms deep underground.

• It contains mainly quartz and feldspar.

• It forms large crystals.

Multiple Choice

Why does diorite look different from granite?

• Because it has different minerals

• Because it is formed above ground

• Because it is a type of sedimentary rock

• Because it is older than granite

Multiple Choice

What is the main difference in appearance of igneous rocks based on how they are formed?

• They can look different depending on their formation process.

• They are always black and shiny.

• They always have gas pockets.

• They are only found in volcanoes.

Multiple Choice

Which process is responsible for the formation of igneous rocks as described in the fourth image?

• Erosion and deposition

• Cooling and hardening of magma or lava

• Compaction and cementation

• Weathering and transportation