Earth's Interior & Plate Tectonics

Which of the following occurs because of convection currents?

• Tectonic plates on the crust move.
• The mantle increases in size.
• Pressure in the crust increases.
• Pressure in the crust decreases.

Where does the heat come from that drives this convection current in the mantle? 

• The sun
• The crust
• the mantle
• the core

Name the boundary

• convergent boundary
• divergent boundary
• transform boundary
• sergent boundary

Name the boundary

• convergent boundary
• divergent boundary
• transform boundary
• sergent boundary

A subduction zone is formed...

• when one tectonic plate sinks below another
• at every type of convergent plate boundary
• at every type of divergent plate boundary
• at transform boundaries

What are mid-ocean ridges?

• A chain of underwater waterfalls 
• A chain of underwater volcanos
• A chain of underwater mountains
• A chain of underwater rocks

What does the theory of continental drift state?

• The continents were once joined in a super-continent and have moved over time
• Continents are stationary and do not move
• The Earth is broken into lithospheric plates that move due to convection currents
• none of the above

This land formation occurs at a divergent continental/ continental boundary.

• mid ocean ridge
• deep ocean trench
• pacific hot spot
• rift valley

Geologists obtain indirect evidence about Earth's interior by...

• measuring pressure at the surface
• studying seismic waves
• drilling through each layer
• estimation of temperature in the layers

Which of the following did not support continental drift?

• magnetic striping on the ocean floor
• identical fossils on continents
• mountain ranges
• coastlines fit like a puzzle