U2. Tectonics - Progress Check #1

Which statement best describes a tectonic plate?

• A layer of molten rock found under the oceans

• A large slab of solid rock that makes up Earth’s crust and upper mantle

• A block of land that floats on the ocean’s surface

• • A dense, heavy layer under the Earth’s crust

What is the main difference between oceanic and continental plates?

• Oceanic plates are thicker than continental plates

• Continental plates are denser than oceanic plates

• Oceanic plates are denser and thinner than continental plates

• Continental plates are only found in the oceans

Because the oceanic plate is denser than a continental plate, what happens when the two plates collide?

• The continental plate slides beneath the oceanic plate, forming deep-sea trenches.

• The oceanic plate is forced under the continental plate, leading to volcanoes

• The plates move past each other with little effect

• Both plates are pushed upward to form a mountain range

What happens at a divergent plate boundary?

• Plates slide past each other

• Plates move toward each other

• Plates move away from each other

What happens at a convergent plate boundary?

• Plates slide past each other

• Plates move toward each other

• Plates move away from each other

What happens at a transform plate boundary?

• Plates slide past each other

• Plates move toward each other

• Plates move away from each other

Which of these is an example of a feature formed at a convergent boundary?

• Mid-ocean ridge

• Rift valley

• Volcano or mountain range

• Earthquake zone

What usually occurs at a transform boundary?

• Mid-ocean ridge

• Rift valley

• Volcano or mountain range

• Earthquake zone

What would most likely form at a continent - continent convergent boundary?

• Volcanoes

• Mountain ranges

• Mid-ocean ridge

• Rift valley

Bonus: What type of boundary is the Himalayas (喜马拉雅山)?

Think about what you know about boundaries!

• Transform

• Divergent

• Convergent (ocean-continent)

• Convergent (continent-continent)