Ocean Unit 1 Review

What is continental slope?

• steep slope to basin floor

• abrupt change in slope at edge of shelf, leading to rapid increase in depth

• nearly flat land-border sloping gently

• Submarine canyons

Where do active margins occur?

• near hydrothermal vents

• after a tsunami happens

• occur at plate boundaries

• edge of continental crust is within a plate

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

A flat plain on the ocean crust is a

• active margin

• passive margin

• abyssal plain

• continental divide

How are chimneys formed in hydrothermal vents

• it gets so hot they explode

• Minerals are deposited

• When rocks erode at the sides

• After the vents leak white or black rocks

The asthenosphere is responsible for

• convections currents that move the plates

• causing the outer core to be liquid

• adding pressure to the layers of the Earth

Tags

NGSS.MS-ESS2-3

Which type of crust is thicker?

• Oceanic

• Outer core

• Inner core

• Continental

Which type of crust is more dense?

• Oceanic

• Continental

• Abyssal Plain

• Earthquake

What is the largest geological feature on Earth?

• Smoky Mountains

• Grand Canyon

• Mid-Ocean Ridge

• Subduction Zone

What creates new ocean floor?

• Convergent plate boundaries

• San Andres Fault

• Hydrothermal Vents

• Divergent plate boundaries

Why doesn't seawater boil in hydrothermal vents?

• the plates do not move fast enough

• there is too much salt in the water

• due to the extreme pressure of the deep ocean.

• there are not enough chemicals to help it get hot