Tectonic Mechanisms

Which image best illustrates the magma convection currents within Earth’s interior?

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Tags

NGSS.MS-ESS2-1

Which layer of Earth has the lowest temperature, is entirely solid, and floats on top of fluid-like matter?

• Mantle

• Outer Core

• Crust

• Inner Core

Camille and her friends enjoy experimenting with different foods. During a camping trip, they decide to fry bacon using nothing more than hot rocks. Camille heats a rock in the campfire for 30 minutes, and then removes it with tongs. She greases the rock and lays the bacon strips directly on it. The bacon turns out great, and the girls enjoy the food. Which two sentences accurately describe the girls’ experience with heat transfer?

• Heat was transferred from the fire to the rock.

• The girls cooked the bacon using convection currents.

• The bacon and the fire were in thermal equilibrium.

• The bacon lost energy to the rocks as they got warmer.

• The girls used conduction to cook the bacon.

Tags

NGSS.MS-PS3-5

Which sentence provides evidence that heat travels from Earth’s mantle up to its crust?

• Earth’s atmosphere is warmer during the day than at night.

• Earth’s outer surface is cooler than its interior layers.

• Rocks and other objects on Earth’s surface heat up quickly in the afternoon sun.

• The core of Earth is solid, but the layer just beneath Earth's crust is molten.

Tags

NGSS.MS-ESS2-1

NGSS.MS-PS3-4

How does the magnetic field surrounding Earth benefit humankind?

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  It prevents magma from seeping out of the crust.

• It steers aircraft away from radiation belts.

• It protects us from radioactive particles.

• It draws more oxygen into the atmosphere.

Which of these conditions would likely cause the tectonic plates of Earth to stop moving?

• Earth’s crust and mantle reach thermal equilibrium.

• Earth stops receiving energy from the Sun.

• The temperature of the surface of Earth drops considerably.

• The amount of radiogenic heat released by the mantle multiplies.

Phoebe removes frozen vegetables from the freezer to make herself a stir-fry. She’s in a bit of a hurry, so she immerses the plastic bag of vegetables in a pot of warm water. As a result, the vegetables thaw in less than 15 minutes. Which sentences accurately describe the heat transfer that has taken place?

• The plastic bag conducted heat to the vegetables.

• The water and vegetables both lost an equal amount of heat.

• Heat from the vegetables was transferred to the water.

• Atoms in the vegetables began vibrating faster.

• Water in contact with the plastic bag cooled down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens at locations where magma convection currents flow away from one another?

• Overlying, adjacent plates collide violently.

• Groundwater rises to the surface.

• New crust is formed along the boundary.

• Oceanic plates slide beneath continental plates.

• Overlying, adjacent plates are pulled apart.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What is this boundary?

• Transform boundary/crust neither forms nor submerges

• New crust forms/divergent boundary

• Convergent boundary/crust submerges into mantle

What is this boundary?

• • new crust forms/divergent boundary

• • convergent boundary/crust submerges into the mantle

• • transform boundary/crust neither forms nor submerges

Tags

NGSS.MS-ESS2-3