Earth's Forces Unit 4 Review

What evidence did early mapmakers use to suggest that Earth's continents were once connected?

• plate tectonics

• ancient climate patterns

• similar coastlines

• geological formations

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

• magnetic and sonar data proved that Wegener’s hypothesis was incorrect
• continental landmasses were too big to move slowly over Earth’s surface
• mantle convection currents weren’t in motion at that time
• Wegener couldn’t explain why or how the continents moved

Tags

NGSS.HS-ESS1-5

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

• older

• the same age

• magnetically reversed

• younger

Tags

NGSS.MS-ESS1-4

What does the magnetic pattern of ocean-floor rocks indicate about the history of Earth's magnetic field?

• It shows a random distribution of magnetic fields.

• It is identical to the magnetic pattern found in continental rocks.

• It reveals a symmetrical pattern on either side of ocean ridges.

• It indicates that the ocean floor is older than the continents.

Tags

NGSS.HS-ESS1-5

What do isochron maps of the seafloor reveal about the age of oceanic crust?

• It is oldest at mid-ocean ridges

• It is youngest at subduction zones

• It is youngest near mid-ocean ridges

• It is thinnest at deep-sea trenches

Tags

NGSS.HS-ESS1-5

What geological feature is formed as a result of seafloor spreading and magma intrusion?

• mid-ocean ridges

• deep ocean trenches

• volcanic islands

• continental shelves

Tags

NGSS.MS-ESS2-3

Which geological features are typically formed at divergent plate boundaries?

• volcanic arcs

• rift valleys

• fold mountains

• subduction zones

Subduction leads to the creation of

• a volcanic island arc

• a mid-ocean ridge

• a transform fault

• an oceanic plateau

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Continental-continental plate collisions result in the formation of

• oceanic trenches

• volcanic island chains

• rift zones

• towering mountain ranges

Crust is neither destroyed nor formed along which of the following boundaries?

• convergent
• magnetic
• divergent
• transform