Rock Quiz

A type of rock that forms from the cooling of molten rock at or below the surface of the earth

• Igneous Rock
• Metamorphic Rock
• Sedimentary Rock
• chemical Rock

Igneous rock that forms from lava on Earth's surface

• Organic Rock
• Intrusive Rock
• Clastic Rock
• Extrusive Rock

What does it mean for a rock to be extrusive

• formed from magma
• Have Rounded Edges  formed from heat and pressure
• Form from Lava
• Form By Sediment

This rock cools so quickly that crystals have no time to form.

• Basalt
• Obsidian
• Gabbro
• Pumice

Is lava above or below ground

• below
• above

Rock that form and cool slowly below the Earth's surface form what size of crystals?

• Small
• Large
• none

This rock is often used for kitchen counters and it is an an example of intrusive igneous rock.

• basalt
• granite
• coal

What type of rock is Pumice?

• extrusive sedimentary rock 
• foliated metamorphic rock  
• extrusive igneous rock 
• clastic sedimentary rock 

Which statement best describes how this rock was formed?

• Flowing magma cooled quickly, creating many uneven layers.

• Separate layers of lava cooled over time, hardening at different rates.

• Layers of mineral deposits were compressed over a long time period.

• Extreme pressure melted and formed minerals in uneven layers.

This picture shows a granite rock that was sculpted into a statue. Granite is often used for decoration and sculpting because the large crystal formations are very beautiful. The large crystals are formed when magma cools slowly. What type of rock is granite?

• Metamorphic

• Igneous

• Marble

• Sedimentary