Dynamic Earth Unit 3 Science

Sophia was studying with Maalik about the layers of the Earth. They were given several different statements about the layers. Which statement about the layers would they identify as correct?

• The outer core is less than 70 km in thickness.

• The crust assists in forming Earth’s magnetic field.

• The mantle is denser than the crust.

• Pressure increases when moving from the core to the crust.

What may occur when convergent boundaries interact?

• formation of island chains

• creation of mid-ocean ridges

• creation of convection currents

• formation of rift valleys

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

Which indicates how evidence of climate change supports the theory of continental drift?

• coal fields in several continents

• volcano formation

• glacial evidence found in South Africa

• folded mountains in Africa and South America

Which statement best describes the theory of plate tectonics?

• Plates sometimes move closer to one another.

• Sections of Earth that shift are part of Earth’s asthenosphere.

• Sections of Earth’s continents are in slow, constant movement.

• Parts of the ocean floor move as they are carried by rift valleys.

Tags

NGSS.MS-ESS2-3

Which feature forms when magma cools beneath Earth’s surface?

• geysers

• calderas

• batholiths

• vents

Which is one piece of evidence of seafloor spreading?

• fossil material

• continent material

• drilled core samples

• ocean water samples

Tags

NGSS.MS-ESS2-3

Which statement describes one event that happens at deep-ocean trenches?

• Crust is formed.

• Mountains are formed.

• Seafloor spreading occurs.

• Denser plates slide under lighter plates.

When were Earth’s landmasses first recognizable as the continents we know today?

• 10 million years ago

• 135 million years ago

• 180 million years ago

• 300 million years ago

Tags

NGSS.MS-ESS2-3

Which is one step that geologists use to find the epicenter of an earthquake?

• They look at data from at least one seismograph.

• They measure the difference between arrival of P waves and S waves.

• They draw circles around the epicenter from three locations.

• They obtain information about the intensity of earthquakes from seismographs.

Which increases along faults and leads to rock breaking?

• damage

• earthquake

• focus

• stress