Earth History: Investigation 5

A student shared an igneous rock he bought that has beautiful fish and plant fossils in it. Another student gently pointed out that he may want to try to get his money back. How did the student know the rock was fake? (Mark the one best answer.)

• Fish and plants don't fossilize in the same rocks.

• It is impossible for fossils to form in igneous rocks.

• It is not legal to sell real fossils.

• Igneous rocks don't form underwater.

Your friend offers to show you an intrusive igneous rock. Which of the following would you expect to see? (Mark the one best answer.)

• A glassy rock

• A rock with large crystals

• A rock with small crystals

• A rock with large bubbles

What feature is the most important in an igneous rock?

• color
• size
• material
• size of crystals

If you see no crystals in a rock, what does that tell you about how it was formed?

• the rocks cooled slowly below the ground and tiny crystals formed
• the rocks were under tremendous heat and pressure so no crystals formed
• the rocks cooled quickly above ground forming crystals too small to see
• no crystals were formed

Where is magma?

• inside 
• outside

How do Intrusive Igneous rocks cool?

• quickly
• slowly
• really fast

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Extrusive forms _________crystals

• small
• large

Igneous rock that forms from lava on Earth's surface

• Organic Rock
• Intrusive 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

What type of rock is this?

• Extrusive igneous rock
• Intrusive igneous rock