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Plate Tectonics
Plate Tectonics Review
Question | Answer |
---|---|
Which layers of Earth make up one compositional layer? | The inner and outer core |
What type of rock forms from hardened lava and magma? | Igneous |
What was Pangea? | A single land mass that is now separated into continents |
How do erosion and deposition change Earth's surface? | They round out or flatten some land surfaces |
At what type of plate boundary does subduction occur? | Convergent boundary |
What is subduction? | When the denser oceanic plate moves under the continental plate at a convergent boundary (volcanoes and earthquakes are common here) |
How does an erupting volcano help us learn about the interior of Earth? | Lava helps us know that there is very hot material within the Earth |
How does convection work within the mantle? | Hot magma becomes less dense, which causes it to rise, where it becomes less dense and sinks. This convection current is what drives the movement of plate tectonics. |
To determine the relative age of rocks, what do scientists use? | The Law of Superposition |
At a convergent boundary, when plates collide, they uplift or push up the land. What is a well-known landform that was created this way? | Mount Everest |
Continents move due to... | Sea Floor Spreading |
At convergent boundaries sometimes volcanic mountains form due to: | Subduction |
When there is rapid change in tectonic plates, it can be felt on the surface of the Earth as an: | Earthquake |
Earthquakes and volcanoes occur due to: | High temperatures in Earth's mantle |