Mantle & Plate Power
Which layer of Earth is made of moving plates?
The lithosphere. (includes crust and upper soild part of the mantle)
What is it called when one plate slips past another?
A transform boundary.
What is the theory that explains moving plates called?
Plate tectonics.
What cuases earthquakes?
The sudden movement of Earth’s plates or faults.
How do volcanoes and plate tectonics connect
Volcanoes often form where plates meet or separate.
What force causes the plates to move?
Convection currents
What happens at many plate boundaries?
Earthquakes and volcanoes can happen there.
What is it called when a dense oceanic plate moves under a lighter continental plate?
Subduction
The point directly above the focus on the land surface
Epicenter
What can form when molten rock reaches the surface?
A volcano.
describe the speed of movement of tectonic plates
moving very slowly
Describe the difference in continental crust and oceanic crust in terms of density.
Continental crust is less dense
Oceanic crust is more dense
What landform can form when plates push together
Mountains.
Where do most earthquakes happen
Near plate boundaries.
What is magma called once it comes out of a volcano?
Lava
What is it called when two plates move apart?
A divergent boundary.
What is one effect of plate movement on Earth’s surface?
It can change landforms.
What ocean feature can form when plates move apart?
A mid-ocean ridge
Which waves travel faster (p-waves or s- waves)
p- waves
Large volcanic eruptions can lower global temperatures in the atmosphere by releasing tons of this reflective gas aerosol.
sulfur dioxide
What is it called when two plates crash into each other
A convergent boundary
What plate boundary often creates mid-ocean ridges?
A divergent boundary.
Volcanic island arc (a curved chain of volcanic islands rising out of the sea) occurs during what type of plate interaction?
Oceanic vs. Oceanic convergent boundary
Which waves only travel through solids? (p-waves or s-waves)
s- waves
What can cause temporary cooling by shading incoming solar radiation if the particles were launched high enough into the atmosphere
gases and dust particles from a volcanic eruption