ES Spring Final Review

What is Pangaea?

• a large ice sheet

• a fern that lives close to the equator

• a supercontinent made of the present-day continents

• an island chain close to the equator

What evidence suggests that continents were once joined?

• topography of the seafloor

• convergent plate boundaries

• the puzzle-like fit of coastlines

• there is no evidence continents were ever joined

What are tectonic plates?

• slabs of oceanic crust

• slabs of continental crust

• slabs of crust and upper mantle

• plates that do not move

What causes tectonic plates to move?

• earthquakes in the crust

• convection in the mantle

• magnetism on the seafloor

• none of the above

The theory of ________ states that Earth’s surface consists of plates that move relative to one another.

• plate tectonics
• continental drift

• seafloor spreading

• none of the above

Two plates slide past each other at a ________.

• divergent plate boundary

• transform plate boundary

• convergent plate boundary

• plates don't slide past each other

A continent floats on top of the mantle because the mass of the continent is equal to the mass of the mantle it ________.

• displaces
• strains

• compresses

• shears

What features form where two plates diverge?

• plains and plateaus

• rifts and mid-ocean ridges

• mountains and ocean trenches

• none of the above

Mountains are worn down by __________.

• uplift and subsidence

• weathering and erosion

• convergence and divergence

• the rock cycle

What is strain?

• any force acting on rocks

• a change in the rock’s shape due to stress

• a balance between the crust and the mantle

• all of the above