Changing Earth Surface and Evidence of Plate Movement

Plate tectonics is our current theory of how the movement of continental masses relates to the movement of ocean basins. This movement explains many phenomena, such as

• Earthquakes

• Volcanoes

• Tsunamis

• All of the above

The observation that the continents fit together like puzzle pieces is called

• Continental plowing

• Continental drift

• Wandering continents

• Shape matching of continents

Plate tectonics, or the movement of pieces of Earth's crust, is thought to be caused by

• Hot spots

• Convection currents in Earth's crust

• Convection currents in Earth's mantle

• Convection currents in Earth's core

The Earth's continents were once connected in one giant continent called

• Eurasia

• Giganticus

• Pacifica

• Pangaea

Scientists found that the continents were moving apart from each other due to magma rising out of mid-ocean ridges, and they called this

• Sea floor spreading

• Sea floor rising

• Changing sea floor

• Underwater volcanos

Why is it dangerous to live near plate boundaries?

• Volcanic activity is dangerous to the lives of the people.

• It is where the shaking of the ground can be felt which can kill

  several people.

• Oceanic mantle and continental plates interact at boundaries

• Both A and B.

This occurs along the fractures that appear as the plates move apart.

• Earthquake

• Fault

• Heat

• Mantle

This pattern is a movement that forms when warm material rises, cools, and eventually sinks down.

• Convection cell

• Fault

• Heat

• Mantle

Where are the plate boundaries located?

• at the center of the lithospheric plates

• at the bottom of the lithospheric plates

• at the very edge of the lithospheric plates

• anywhere at the center or bottom of the lithospheric plates

Which of the following is TRUE for slab pull?

• upwelling of magma to the crust

• pushing of two plates away from each other

• sinking of a plate over the other

• pulling of two plates toward each other