Ocean Formation

At the Mid-Ocean Ridge and active volcanoes you can find:

• fault lines

• earthquakes

• older crust

• newest crust

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

At which age strip in the picture will new crust form?

• 5

• 4

• 3

• 2

• 1

Tags

NGSS.MS-ESS2-1

Ferromagnetic molecules make up little shavings of iron that are in rock and align themselves to magnetic north when the rock is molten and liquid. Where do we find this?

• Past the subduction zones where land and ocean plates collide

• On either side of mid-ocean ridges

• On the land under the Antarctic cap

• In the layers of rock surrounding the Grand Canyon

• In the convection cells of the mantle

Tags

NGSS.HS-ESS1-5

Which description most accurately explains what is occurring in the diagram?

• If you are 600 Km from the ridge the crust is 40 million years old

• If you are 1800 km from the ridge the crust is 20 million years old

• The further from the ridge the younger the crust

• The further from the ridge the older the crust

• The distance from the ridge does not affect the age of the crust just the depth of the water

Tags

NGSS.MS-ESS2-3

New crust is always formed at the...

• mid-ocean ridge

• deep-ocean trench

• asthenosphere

Tags

NGSS.MS-ESS2-1

Why does the ocean floor sink beneath the continent at Z?

• The ocean floor is less dense than the continent.

• The ocean floor is more dense than the continent.

• The ocean floor is moving faster than the continent.

• The ocean floor is moving slower than the continent.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The Mid-Ocean Ridge is a divergent fault on the floor of the Atlantic Ocean that helps explain continental drift. Which best describes where the oldest rock is on the floor of the Atlantic Ocean?

• Next to the Mid-Atlantic Ridge on it's East side.

• Next to the Mid-Atlantic Ridge on it's West side.

• At the very center of the Mid-Atlantic Ridge

• At the far edge of the ocean plate where it meets the continents

• In the center of the oceans where it is still moving

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A conveyor belt could be used as a model for:

• where volcanoes are erupting

• where continental plates meet oceanic plates

• Where mantle convection cells are heated by the Earth's core

• Where the thermal heat is lost at the surface

• Where new crust is formed on the ocean floor

At the mid-ocean ridge new crust forms and spreads apart the plates at a rate of 1 inch per year. How long would it take for the plates to be 10 inches apart?

• 10 months

• 1 year

• 10 years

• 100 years

• 1000 years

This landform can occur at a divergent plate boundary.

• trench

• mountain

• mid-ocean ridge

• fault

Tags

NGSS.MS-ESS2-3