Unit 5 Plate Tectonics

The picture shows a diagram of Earth's layers.

What is happening at point W?

• Magma in the mantle is being heated by the hot core, causing it to rise toward the crust, then sink as it cools, the convection circuit pulling the tectonic plates.

• Water in the mantle is being heated by the hot crust, which causes it to sink toward the core where it cools, the convection circuit pulling the tectonic plates.

• Energy from the Sun heats the crust, which conducts heat into the mantle, causing the magma to warm and sink toward the core, pulling the tectonic plates.

• Energy from the Sun heats the crust, causing it to shift and pull the tectonic plates, which uses friction to heat the magma in the mantle.

Tags

NGSS.MS-ESS2-1

According to the theory of plate tectonics, where do activities such as earthquakes and volcanic eruptions occur?

• along plate boundaries

• in the centers of plates

• above the surfaces of plates

• in the outer regions of plates

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NGSS.HS-ESS1-5

Which explanation describes why seafloor spreading occurs?

• Lithospheric plates join together under the ocean floor.

• Lithospheric plates are formed under the ocean floor.

• Lithospheric plates move apart under the ocean floor.

• Lithospheric plates rub together under the ocean floor.

During a tectonic plate demonstration, a teacher pushes two pieces of clay together. What kind of plate boundary was the teacher demonstrating?

• ,convergent

• earthquake

• equator

• divergent

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NGSS.MS-ESS2-3

What must happen within Earth for a volcano to form?

• Hot water just under the crust must convect, slowly moving as heat circulates from the mantle to the bottom of the crust, until pressure increases and it erupts.

• Hot magma in the mantle must convect, slowly moving as heat circulates from the core to the surface, and pulling or pushing the tectonic plates.

• There must be frequent, violent thunderstorms with lots of lightning, which transfers energy into the magma in the ground and causes it to erupt.

• A mountain must be so old that its insides have started to break apart, leaving room for hot magma to collect inside and pulls or pushes the tectonic plates.

Tags

NGSS.MS-ESS2-1

What does the theory of continental drift state?

• All the continents were once one continent that broke up and drifted apart over hundreds of millions of years.

• The continents have always been separate but may one day drift together to form a single continent.

• The layout of the continents is the same today as it has always been.

• New continents are continually being created and destroyed.

Tags

NGSS.HS-ESS1-5

Magma rises to become new oceanic crust where

• one plate splits into two distinct plates.

• one plate grinds against another plate.

• two plates separate and move apart from one another

• two plates meet and collide with one another.

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Of what are tectonic plates composed?

• ,silt AND clay

• rhyolite and obsidian

• asthenosphere and crust

• oceanic and continental crust

The diagram shows the converging of an ocean and a continental tectonic plate. Which statement BEST describes the event occurring at this plate boundary?

• As the plates collide, the friction between the plates causes heat that can produce a volcano.

• As the plates collide, the friction between the plates can cause splitting that could produce a rift valley.

• The collision of the plates can cause a gap in the crust.

• The collision of the plates can cause new crust to form.

Tags

NGSS.MS-ESS2-2

Earth has several types of tectonic plate boundaries. Which type exists between two plates that are moving apart?

• transform

• ,divergent

• convergent

• conservative