Newly formed plates becoming denser and thicker at a mid-ocean ridge, causing the mantle to sink under its own weight.

The mid-ocean ridge pulling plates together.

Slabs of rock being pulled side to side as an S wave moves them horizontally, causing scarring to the land, and massive erosion.

As seafloor spreading produces new crust, what occurs to the excess crust left behind?

It is subducted, melting in an area known as the subduction zone.

It is left on the earth, causing gradual growth over thousands of years.

It is weathered by biological matter, or eroded by water.

It is mined for resources, farmed like fruits or vegetables.

Quiz

Plate Tectonics Quiz

Ronnie Barter 5 questions

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1Seismic waves are used to map the earth's structure.
1. ATrue
2. BFalse
2What is slab-pull?
1. AThe mid-ocean ridge pulling plates together.
2. BNewly formed plates becoming denser and thicker at a mid-ocean ridge, causing the mantle to sink under its own weight.
3. CSlabs of rock being pulled side to side as an S wave moves them horizontally, causing scarring to the land, and massive erosion.
3Approximately every 400,000 years the magnetic fields of the earth change direction, resulting in the north pole and the south pole swapping.
1. ATrue
2. BFalse
4As seafloor spreading produces new crust, what occurs to the excess crust left behind?
1. AIt is left on the earth, causing gradual growth over thousands of years.
2. BIt is weathered by biological matter, or eroded by water.
3. CIt is subducted, melting in an area known as the subduction zone.
4. DIt is mined for resources, farmed like fruits or vegetables.
5Plate boundary collision/contact is the only reason a Volcano may occur.
1. ATrue
2. BFalse