Plate Tectonics Rev.

Which of the following provides evidence that the continents on tectonic plates have moved away from each other in the past?

• The composition and thickness of rock layers vary at different depths.

• The frequency of volcanic activity is higher at the edges of tectonic plates.

• Ocean currents can be disrupted near boundaries between tectonic plates.

• Fossils of the same plants and animals are found on widely separated continents.

Tags

NGSS.MS-ESS2-3

Examining rocks that form on either side of the Mid-Atlantic Ridge provides evidence that supports the theory of Plate Tectonics. These rocks provide evidence of plate movement because, as we look at rocks farther and farther from the ridge, the rocks...

• have higher iron content.

• are made up of smaller particles.

• become thicker and thicker.

• are consistently older.

Tags

NGSS.MS-ESS2-3

We can distinguish the layers of Earth based on their chemical composition and the state of matter (solid or liquid) of each layer. A diagram of Earth's layers is provided below. Which letter in the diagram identifies the layer of Earth made up of solid nickel and iron?

• Layer A

• Layer B

• Layer C

• Layer D

Students wanted to investigate soil formation by seeing how rocks are weathered. They shook rocks in a jar of water and measured their mass after shakes. Which of the following is a reasonable prediction for the mass of the rocks after 100 shakes?

• 166 grams

• 157 grams

• 141 grams

• 100 grams

Which of the following describes a way in which ice, through the process of ice wedging, can cause weathering in rocks?

• Water fills cracks in rocks and breaks rock into pieces when it freezes.

• Glaciers move large boulders across long distances.

• Melting ice adds water to rivers that flow downhill, smoothing rock.

• Rocks on the bottom of lakes get trapped when the water freezes.

Tags

NGSS.MS-ESS2-2

Humans are trying to reverse the effects of erosion of the Georgia coastline when they do which of the following?

• Regulate fishing

• Add sand to beaches

• Clean up litter

• Limit visitors to parks

Tags

NGSS.MS-ESS3-3

Florida is a coastal state that experiences powerful, destructive storms called hurricanes. During a hurricane, beaches are changed by erosion. Which statement below describes what occurs?

• Water and wind break down rocks on the beach into smaller pieces.

• Gravity pulls apart larger boulders on the beach into fragments.

• Sand is carried away from the beach by waves and wind.

• Plant roots grow through and move sediments on the beach.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Which of the following correctly describes the layer of Earth known as the mantle?

• It is the thickest layer, and it has the characteristic of plasticity.

• It is the thinnest layer, and it is made of cooler rock.

• It is the deepest layer, and it is made of solid metal.

• It is the hardest layer, and it is made of solid iron.

How can deforestation, or clear-cutting, influence erosion?

• Deforestation is helpful in keeping the area clear, which helps keep the soil in place.

• Deforestation removes plant roots that help hold soil in place. When large areas of trees are removed, the soil can be easily washed away.

• When deforestation happens, there is less trash and pollution in the environment.

• Deforestation increases the movement of tectonic plate movement by causing a change in density.

Tags

NGSS.MS-ESS2-2

Which of Earth's layers has the lowest density?

• Crust

• Inner Core

• Mantle

• Outer Core