Tectonic Plates Review

Front

Where will you find the oldest rocks within the oceanic crust?

Back

farthest from the ridge

Answer explanation

The oldest rocks within the oceanic crust are found farthest from the ridge, as they have had more time to cool and solidify compared to rocks closer to the ridge.

Front

When two oceanic plates converge, this eventually forms.

Back

volcanic island arc

Answer explanation

When two oceanic plates converge, it eventually forms a volcanic island arc due to subduction and volcanic activity along the boundary.

Front

When an oceanic plate and a continental plate converge, what forms?

Back

volcanic mountain range

Answer explanation

When an oceanic plate and a continental plate converge, a volcanic mountain range forms due to subduction of the oceanic plate beneath the continental plate.

Front

When two continental plates converge, what forms?

Back

mountain range

Answer explanation

When two continental plates converge, a mountain range forms as a result of the intense pressure and folding of the Earth's crust.

Front

What is responsible for moving tectonic plates?

Back

convection

Answer explanation

Convection is responsible for moving tectonic plates by transferring heat within the Earth's mantle, causing the plates to move and interact with each other.

Front

Where in the Earth does the convection that drives plate tectonics occur?

Back

mantle

Answer explanation

Convection that drives plate tectonics occurs in the mantle, not in the crust, ocean, or core.

Front

What powers convection in the mantle?

Back

heat from the core

Answer explanation

Convection in the mantle is powered by heat from the core, not from the sun, volcano, or geyser.

Front

The mid-ocean ridge forms at this type of boundary:

Back

divergent

Answer explanation

The mid-ocean ridge forms at a divergent boundary where tectonic plates move away from each other, allowing magma to rise and create new oceanic crust.

Front

When oceanic plate subducts, a ____ forms.

Back

trench

Answer explanation

When oceanic plate subducts, a trench forms, not a ridge, tidal wave, or mountain. Trenches are deep depressions in the ocean floor where subduction occurs.

Front

What is true about Earth's continents?

Back

they are part of tectonic plates

Answer explanation

Earth's continents are part of tectonic plates, which are large sections of the Earth's lithosphere that move and interact with each other.