Geology Part 1 Review

This type of rock is associated with extreme heat and pressure which makes it very hard

• Extrusive Igneous

• Intrusive Igneous

• Metamorphic

• Sedimentary

What is not part of the definition of a mineral?

• Naturally occuring

• Definite composition

• Crystalline structure

• Organic

Limestone is exposed to heat and pressure. It then changes and becomes marble. Which best describes marble?

• It is an igneous rock

• It is a synthetic rock

• It is a metamorphic rock

• It is a sedimentary rock

You find a rock that is black with a few light colored, lar, coarse crystals. Which is true?

• The rock is sedimentary

• The rock is extrusive igneous

• The rock is intrusive igneous

• The rock is metamorphic

Students find a rock in a field. Which of the following would be most useful in identifying it?

• Color

• Smell

• Mineral content

• Specific weight

Which kind of rock is formed when volcanic lava cools?

• Sedimentary

• Metamorphic

• Intrusive igneous

• Extrusive igneous

Igneous rocks are classified by where they form. Which type of igneous rock forms underground?

• Extrusive

• Intrusive

• Volcanic

• Ash

Extrusive rocks have small grains (crystals) because they -

• cool quickly.

• harden underground.

• contain rare minerals.

• have a rough texture.

Is it a good project for a student to see how igneous rocks change to sedimentary rocks within a month?

• Yes, the changes will happen quickly and be significant.

• Yes, changes will be easily observed since they are obvious.

• No, the difference between the two types is not noticeable.

• No, the changes will take much longer than a month to occur.

Rocks are affected by heat and pressure. One source of this pressure is -

• energy from the Sun.

• burning of fossil fuels.

• the mass of overlying rocks.

• the decomposition of organic materials.