New seafloor material is formed at places in Earth's crust where...

Magma rises into the spaces where tectonic plates pull away from one another.

Rock is broken into pieces as tectonic plates push against one another.

One tectonic plate slides beneath another and is forced downward.

Lava flow from volcanic eruptions builds up over many thousand of years.

Which of the following gives evidence that the continents have moved away from each other?

Fossils of the same plants and animals are found on separate continents.

The thickness of rock layers, and what it's made of is different depending on the depth.

How often volcanic activity occurs is higher at edges of tectonic plates.

Ocean currents can be disrupted near boundaries between tectonic plates.

Part of the cycle of recycling seafloor material includes it getting destroyed. This occurs...

at trenches where rock material is subducted.

through weathering and erosion of exposed rock layers.

as a result of violent and constant volcanic activity.

when elements in rock are rearranged chemically.

Continental shelves fitting together is evidence that...

the continents were joined in the past

the continental shelves are made up of the same rock material

the tectonic plates of both are roughly the same age

the material that makes them up comes from sediments eroded from the continents.

The rocks from either side of the Mid-Atlantic ridge provide evidence to support the theory of plate tectonics, because when we look at rocks farther from the ridge, the rocks.....

are made up of smaller particles.

Seafloor Spreading

Authored by Delaney Deely

Science

6th Grade

NGSS covered

Used 49+ times

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20 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

The process in which a denser plate is pushed beneath a less dense plate.

Trenches

Divergent Boundary

Lithosphere

Subduction

Tectonic Plates

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Massive pieces of land that are part of Earth's crust and upper mantle

Trenches

Divergent Boundary

Lithosphere

Subduction

Tectonic Plates

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The deepest parts of the ocean; long, narrow ditches

Trenches

Divergent Boundary

Lithosphere

Subduction

Tectonic Plates

Tags

NGSS.MS-ESS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A boundary formed when two plates move away from one another

Trenches

Divergent Boundary

Subduction

Lithosphere

Tectonic Plates

Tags

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The rigid, outermost layer of Earth

Trenches

Divergent Boundary

Lithosphere

Subduction

Tectonic Plates

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Scientists study the distribution of __________, rocks, and continental shapes.

Tags

NGSS.MS-ESS2-3

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Scientists study rock strata and shapes of continents to understand the movement of _______________.

Tags

NGSS.MS-ESS2-3

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Seafloor Spreading

The process in which a denser plate is pushed beneath a less dense plate.

Massive pieces of land that are part of Earth's crust and upper mantle

The deepest parts of the ocean; long, narrow ditches

A boundary formed when two plates move away from one another

The rigid, outermost layer of Earth

Scientists study the distribution of __________, rocks, and continental shapes.

Scientists study rock strata and shapes of continents to understand the movement of _______________.

Tectonic processes continually create new ocean seafloor at _______________.

When 2 tectonic plates pull apart, a __________ is formed on the ocean floor.

Old seafloor is destroyed at __________.

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