Earth's Layers
What is the layer of Earth that we live on called?
The crust
Mountains
What type of rock is made from heat and pressure?
Metamorphic
What is the hottest layer of the Earth?
Inner core
What are small pieces of broken up rock called?
Sediment
What layer of the Earth is made of liquid metal?
What was Alfred Wegener's original theory of Pangea called?
Continental Drift
What type of rock is made from cooling magma?
Igneous
How do plates move at a divergent boundary?
Apart
Which type of rock would you be most likely to find near a volcano?
Igneous
What layer of the Earth is responsible for convection currents?
What type of boundary causes MOST earthquakes?
Transform boundary
What type of rocks are made from sediments being compacted together?
Sedimentary
List two pieces of evidence for the theory of continental drift?
Varied
What are the TWO types of crust, and what is ONE difference between them?
Continental and Oceanic
Oceanic is thinner and denser
What layers of the Earth make up the lithosphere?
Crust and upper mantle
What causes old crust to be destroyed?
What are the FOUR steps to creating a sedimentary rock?
Weathering/Erosion, Deposition, Compaction, Cementation
What is the name of the supercontinent that once existed?
Pangea
What is the vocabulary word for a denser plate sliding underneath a less dense plate at a convergent boundary?
Subduction
Is the inner core liquid or solid, and WHY?
What causes new crust to be formed?
Seafloor spreading
What is the difference between an EXTRUSIVE igneous rock and an INTRUSIVE igneous rock?
Extrusive igneous rock is formed on Earth's surface, intrusive igneous rock is formed below ground
What forms at a continental-oceanic convergent boundary?
Volcano
What was the name of Harry Hess's theory about the Earth?
The Theory of Plate Tectonics