6th Grade Geology Review

What is the thinnest layer of the Earth?

• Mantle
• Crust
• Inner Core
• Outer Core

What forms when 2 plates come together?

• Mid Ocean Ridge
• Rift Valley
• Mountain
• Volcanic Island

What is soil made out of?

• Dirt
• Weathered Rock
• Organic Material
• Weathered Rock and Organic Material

What type of plate boundary forms a mid ocean ridge?

• Transform (slides past each other)
• Convergent (comes together)
• Divergent (moves away from each other)
• Primary (moves first)

What evidence do we have that the Mesozoic era ended with a mass extinction of the dinosaurs? 

• Fossil record
• Cave paintings
• Number of eras
• Rivers

Building a dam, levee, and storm drain are all ways to control what?

• Earthquakes
• Volcanoes
• Tornadoes
• Floods

Which part of Earth's core is a mineral that causes the Earth's magnetic field?

• Gold
• Magnetite
• Iron
• Fluorite

What processes can happen to change any rock into a sedimentary rock?

• Weathering and erosion
• Weathering and cooling
• Heat and pressure
• Heat and erosion

An index fossil was found in Africa. The same type of index fossil was found in Asia. What does this tell us?

• This tells us nothing important.
• The rock layer in Africa and Asia were formed during the same time period.
• The fossils are not related.
• The fossils can be found all over the world.

Which type of rock forms at the bottom of a body of water?

• Igneous
• Metamorphic
• Mineral
• Sedimentary