In sea-floor spreading, molten material rises from the mantle and erupts

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

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

• convection.

• continental drift.

• subduction.

• conduction.

Most geologists think that the movement of Earth’s plates is caused by _______

• convection.

• continental drift.

• subduction.

• conduction.

Tags

NGSS.MS-ESS2-3

The geological theory of _______ states that pieces of Earth’s lithosphere are in constant, slow motion.

• subduction

• plate tectonics

• deep-ocean trenches

• sea-floor spreading

Tags

NGSS.MS-ESS2-3

The place where two plates come together is known as a _______

• transform boundary.

• divergent boundary.

• convergent boundary.

• rift valley.

Tags

NGSS.MS-ESS2-3

Below is a picture of sea-floor spreading. How are the ocean crusts moving?

• Converging

• Diverging

• Sliding

• No movement

Tags

NGSS.MS-ESS2-2

Where would the oldest rock be found?

• L
• M
• N
• O

Tags

NGSS.MS-ESS1-4

This layer of Earth is the thickest part

• crust
• outer core
• mantle
• inner core

What are the two types of crust?

• continental and oceanic
• ocean and basin
• lower and upper
• thick and thin

A plate boundary at which two plate move parallel to each other in opposite directions

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction