Igneous Rocks

What type of rocks can form on or beneath Earth's surface?

• Sedimentary
• Igneous
• Metamorphic
• Granite

What type of rock forms from lava that erupts on Earth's surface?

• Intrusive
• Extrusive

What type of rock forms when magma hardens beneath Earth's surface?

• Intrusive
• Extrusive

What is one of the most common extrusive rocks?

• Granite
• Obsidian
• Basalt
• Porphyry

What is one of the most common intrusive rocks?

• Granite
• Obsidian
• Basalt
• Porphyry

What determines the texture of an igneous rock?

• color of the minerals
• where it was found
• size and shape of crystals
• how heavy it is

Rapidly cooling lava forms...

• Intrusive rocks
• Extrusive rocks

Slowly cooling magma forms...

• Intrusive rocks
• Extrusive rocks

Fine-grained igneous rocks with small crystals are called....

• Intrusive rocks
• Extrusive rocks

Course-grained igneous rocks with large crystals are called...

• Intrusive rocks
• Extrusive rocks