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The youngest rocks on the ocean floor are located ____.

• near continents

• at mid-ocean ridges

• far from mid-ocean ridges

• near Asia

Tags

NGSS.MS-ESS2-1

Scientists have observed that the continents move apart or come together at speeds of a few centimeters per ____.

• century

• year

• day

• decade

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Seafloor spreading occurs because ____.

• new material is being added to the asthenosphere

• earthquakes break apart the ocean floor

• sediments accumulate at the area of spreading

• molten material beneath Earth's crust rises to the surface

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A vast, underwater mountain chain is called a(n) _________.

• ocean ridge

• oceanic crust

• deep-sea trench

• ocean floor sediment

What particular event is shown on the picture?

• mid-ocean ridge

• subduction zone

• transform boundary

• divergent boundary

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What technology did scientists use in the mid-1900s to map the mid-ocean ridge?

• satellites

• submarines

• deep-sea diving

• sonar

Tags

NGSS.MS-PS4-2

The process by which the ocean floor sinks beneath an deep-ocean trench and back into the mantle is known as

• continental drift

• subduction

• conduction

• convection

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What kind of plate boundary is shown on the picture?

• divergent

• convergent

• transform

• trench

Tags

NGSS.MS-ESS2-1

What is formed at the subduction zone?

• mountain ranges

• deep-sea trenches

• oceanic ridge

• hills and valleys

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The majority of earthquakes and volcanoes occur at which of the following locations?

• The Pacific Ring of Fire

• Mid-Atlantic Ridge

• San Andreas Fault

• The Great Barrier Reef

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2