Chapter 17: Plate Tectonics

The existence of coal bdds in Antarctica indicates that the continent once had _____.

• been part of Africa

• a temperate, rainy climate

• a cold, dry climate

• been farther from the equator

Tags

NGSS.MS-ESS2-3

_____ is a fossil fern that helped support Wegener's hypothesis of continental drift.

• Gondwanaland

• Kannemeyerid

• Mesosaurus

• Glossopteris

Tags

NGSS.MS-ESS2-3

The youngest part of the ocean floor is found _____.

• along deep sea trenches

• where ocean sediments are thickest

• near ocean ridges

• where Earth's magnetic field changes polarity

Tags

NGSS.MS-ESS2-1

At an oceanic-oceanic convergent boundary, _____.

• new crust is created

• old crust is recycled by subduction

• old crust is deformed or fractured

• plates slide past one another

Tags

NGSS.MS-ESS2-1

Convection currents transfer thermal energy _____.

• between continents

• from cooler regions to warmer regions

• from warmer regions to cooler regions

• as a result of buoyancy

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The downward part of a convection current causes a sinking force that _____.

• pulls tectonic plates toward one another

• moves plates apart from one another

• lifts and splits the lithospehre

• creates a divergent boundary

Tags

NGSS.MS-ESS2-1

Many early mapmakers thought Earth's continents had moved based on _____.

• plate boundary locations

• fossil evidence

• climatic data

• matching coastlines

Tags

NGSS.MS-ESS2-3

Continental drift was not widely accepted when it was first proposed because _____.

• Wegner couldn't explain why or how the continents moved

• continental landmasses were too big to move slowly over Earth's surface

• magnetic and sonar data proved that Wegener's hypothesis was incorrect

• mantle convection currents weren't in motion at that time

Tags

NGSS.HS-ESS1-5

Compared to ocean crust near deep-sea trenches, crust near ocean ridges is _____.

• younger

• older

• the same age

• magnetically reversed

Tags

NGSS.MS-ESS2-2

The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is _____.

• a mirror image of that of the other side

• younger than on the other side

• much different from the magnetic pattern found in rocks on land

• at right angles to the ocean ridge

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3