History of Planet Earth Test

The layer just underneath the crust is the:

• core
  core
• magma
• sedimentary rocks
• mantle

Geologists study sedimentary rocks to learn about: 

• environments
• compaction
• math
• people

The most important characteristic of a sediment is 

• it sinks to the bottom of water
• it soaks up water
• its color
• it floats in water

Fossils are

• living organisms
• always the same age
• able to help determine how old rocks are
• found in the mantle

Tectonic plates

• don't move
• float on the mantle
• are very thin
• do not touch

Oceanic crust is _________than continental crust

• heavier
• thicker
• lighter
• older

When tectonic plates move apart, it is called a 

• fault
• divergent boundary
• subduction zone
• rift valley

When two plates converge and one moves under the other, this plate is

• sinking
• burning
• crunching
• subducting

Mountain ranges are usually found where

• oceanic crust converges
• continental crust diverges
• continental crust converges
• plates form transform boundaries

Mountain ranges are usually found where

• oceanic crust converges
• continental crust diverges
• continental crust converges
• plates form transform boundaries