Plate Boundaries
What is the plate boundary where two plates push together?
Convergent
What is the phenomena called when the earth shakes and cracks?
earthquake
How does an earthquake change the surface of the earth?
the land cracks, buildings fall down, the ground may separate
Describe how the plates move to make a mountain.
Two plates push together and get pushed up. As they push up, they may break.
What are the 4 layers of the Earth?
Crust, Mantle, Inner Core, Outer Core
What is the plate boundary where two plates pull apart?
Divergent
What is the phenomena called when a big wave hits the land?
Tsunami
How does a tsunami change the surface of the earth?
The land is wet, some dirt is dragged to the sea so the land is more flat, trees fall down
Describe how the plates move to make an earthquake.
Two plates slide past each other OR push together. As the push, they get stuck. When they finally move, the Earth shakes.
What is a plate?
A piece of the crust
What is the plate boundary where two plates slid past each other?
Transform
What is the phenomena called when the earth pushes together to form taller land?
Mountain
How does a mountain change the surface of the Earth?
The land gets higher and more bumpy, it can be sharp and jagged.
Describe how the plates move to make a tsunami.
Two plates under the ocean push together. One plate gets pushed up, and pushes the water up to make a wave. Then the wave moves through the ocean to the land.
Name at least 2 reasons (evidence) why scientists believe continental drift happened.
*same fossils in different continents
*shapes of continents look like they fit together
*tropical plants in Antarctica
Volcanoes can happen at which plate boundaries?
Divergent and convergent
What is the phenomena when a mountain erupts (explodes) lava, rocks and ash?
volcano
How does a volcano change the surface of the Earth?
The lava cools and forms new rock, ash covers the ground
Describe how a volcano can form at a convergent boundary.
Two plates push together. One gets pulled under the other into the mantle. It melts, making melted rock and gas. The melted rock and gas push up through the crust and cause an eruption.
Name at least 2 things that come out of a volcano
Lava, ash, gas, rocks
What phenomena can happen at a convergent boundary?
earthquakes, tsunamis, volcanoes, and mountains
What is the phenomena called when the plates have slowly moved over time and the continents used to be together as one big continent?
continental drift
How did continental drift change the surface of the Earth?
Before the land was all together, and now it is split into separate continents
Describe how a volcano happens at a divergent boundary.
Two plates pull apart. As they separate, magma from the mantle comes up. It will cool when it hits the air and form new rock.
Explain why the plates move.
Heat from the core rises through the mantle, causing a convection current. This pushes the plates together or pulls them apart.