Boundaries
Plate Tectonics
Causes
Locations
Theories
100

What type of boundary is it when plates move toward each other?

convergent boundary

100

The lithosphere is a permanent structure of the Earth that doesn't move. True or false?

false

100

Who discovered the Mid-Ocean Ridge using Sonar

Harry Hess
100

Where can one divergent boundary be found?

mid-ocean ridge or rift valley

100

What type of volcanoes are the Hawaiian Islands

Hot Spot Volcanoes

200

What type of boundary is it when new crust forms?

Divergent Boundary

200

When an oceanic plate and continental plate collide.

subduction

200
Name of a volcano feature where the magma moves from the mantle to the crust and changes to lava

Pipe

200

Where can slide/transform boundaries be found? (HINT: in the USA)

San Andreas Fault, California

200

Earth's upper crust and upper mantle broken into sections that are in constant, slow motion driven by movement in the mantle is called ______________.

plate tectonics

300

What are the three types of boundaries?

Convergent, Divergent, Transform/Slide Boundaries

300

The layer of Earth we live on.

crust

300

What natural disasters are caused by plate tectonics? There are 3.

volcanic eruptions, earthquakes, tsunamis

300

When convergent oceanic and continental plates meet, what typically happens?

the oceanic plates subducts, or dips below the continental plate

300

What is Continental Drift Theory?

That continents have moved slowly to their current locations. Presence of fossils, rocks, and mountains on different continents help support this idea.

400

What type of boundary is it when two plates slide past each other?

Transform Boundary

400

What causes plates to move?

convection currents

400

Point on the surface of the Eath where earthquake happens ( directly over the FOCUS)

Epicenter

400

What mountain range is formed by convergent boundaries?

Himalayan Mountain Range (Himalayas)

400

What man was not trusted with his idea of movement of plate tectonics?

Alfred Wegener

500

How do we measure how strong an earthquake is?

Measuring Seismic waves using a Seismograph

500

What are plate tectonics?

broken parts of lithosphere that carry continents and oceans

500

Plate tectonics can be destructive, but their movement is not always destructive. True or false?

true

500

Plate boundary movements underwater can cause tsunamis. True or false?

true

500

What is seafloor spreading?

New ocean floor is created as molten material from the earth's mantle rises in openings between plates and spreads out.