Unit 9 Rocks Test Review

Igneous rocks and metamorphic rocks have similar formation, in that they both –

• require extreme heat.
• always form from sediments.
• cool to form distinct layers. 
• often contain fossil organisms.

The lithosphere consists of the –

• upper mantle and the crust. 
• lower mantle and the outer core.
• inner and outer core.
•  crust and the entire mantle.

Rocks are classified by -

• how they were formed.
• when they were formed.
• where they were formed.
• their color when formed.

The interlocking crystals of an igneous rock help to classify it since these crystals are evidence of how the rock formed. The crystals are a result of –

• quartz coming out of solution.
• particles forming layers. 
• chemical reactions of minerals.
• melted rock that cooled.

Sedimentary rock can be changed into metamorphic rock if it is -

• weathered and eroded by ocean waves.
• exposed to extreme heat underground.
• broken down by heating and cooling. 
• cemented with minerals carried in water.

According to scientific data, which layer of Earth is the thickest?

• Crust
• Inner Core
• Mantle
• Outer Core

Igneous rock can be changed into sedimentary rock when igneous rocks –

• that form mountains get pushed together.
• are weathered and the fragments deposited. 
• melt to form layers of different minerals.
• put out by volcanoes create new land.

Which of the following processes might be one of the first steps in the formation of sedimentary rock?

• Glaciers breaking down rock 
• Liquid magma cooling and hardening
• Rock melting deep underground 
• Minerals changing due to pressure

• Location A
• Location B
• Location C
• Location D

Sedimentary rock can contain evidence of life because of all the following are properties of sedimentary rock EXCEPT - 

• It can be made from mud.
• It is created under the ocean.
• It is formed by melting rock. 
• It can contain organic material.