Sea Floor Spreading

Oceanic crust near the mid-ocean ridge is younger than oceanic crust farther away from the ridge.

• true

• false

Tags

NGSS.MS-ESS2-3

Most geologists think that the movement of Earth's plates is caused by __________________.

• conduction

• earthquakes

• convection currents in the mantle

• Earth's magnetic field

Tags

NGSS.MS-ESS2-3

What type of boundary is shown at A?

• transform
• convergent
• divergent
• subduction

Tags

NGSS.MS-ESS2-3

What is happening at point B?

• subduction
• a divergent boundary
• convection
• an earthquake

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

How is it possible for new crust to be formed without increasing the surface area of the Earth?

• Crust is destroyed at the same time it is created

• New crust is underwater where it sinks

• New crust breaks more easily than old crust

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

What is an undersea mountain chain where new ocean floor is produced?

• Rift valley
• Deep-ocean trench
• Mid-ocean ridge
• Transform bounda

What type of event will occur at this boundary?

• Earthquake

• Volcano Eruption

• Tornado

• Mountain Building

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

Where would the oldest rock be found?

• L
• M
• N
• O

Tags

NGSS.MS-ESS1-4

Where do volcanoes most commonly form?

• Along the equator.

• In Earth's polar regions.

• In the middle of tectonic plates.

• Near tectonic plate boundaries.

What does the theory of Continental Drift explain?

• Ocean currents move continents around the planet

• Convection works deep within the asthenosphere

• Mid-ocean ridges force tectonic plates to move

• Continents were once together and slowly drifted to where they are today

Tags

NGSS.HS-ESS1-5