Plate Motion

At divergent plate boundaries ...

• Ocean water fills the gap as the plates move away from each other

• A gaping hole forms where we can look into the center of the Earth as the plates move away from each other

• The plates move together and one sinks under the other, forming a trench

• Soft, solid rock from the mantle rises as the plates move away from each other. Then it hardens, adding hard, solid rock to the edges of both plates

How are earthquakes and plate motion related?

• Plate motion causes earthquakes

• Earthquakes cause plate motion

• Earthquakes have nothing to do with plate motion

• Earthquake occur in the middle of the plates

Tags

NGSS.MS-ESS2-3

A trench is...

• A long, deep indentation in the ocean floor formed when two plates move together

• An extinct reptile that lived about 300 million years ago

• An underwater mountain range formed at divergent boundaries

• the layer of soft, solid rock underneath Earth's plates

What happens to a plate that sinks underneath another plate?

• continuously sinks into magma until the plate is gone

• the plate comes back up in another area

• nothing happens

• it melts and becomes part of the mantle

Tags

NGSS.MS-ESS2-3

True or False. A mid-ocean ridge is something formed underwater when two plates move apart.

• True

• False

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What did the Alfred Wegner use as evidence to support his idea that the continents were once connected?

• Fossils, similar rocks, glaciers, live animals, opinions

• Fossils, live animals, they fit like a puzzle, guessing, rock types

• Similar rocks, glaciers, live animals, they fit like a puzzle

• Similar rocks, they fit like a puzzle, fossils, patterns of landforms

How did Alfred Wegener know about Continental drift

• Fossil of the same plants and animals were found on different continents.

• Rocks and earthquakes are the same on all continents.

• Maps showed him what the continents looked like millions of years ago.

• The types of water and buildings found on North America were similar to those found in Europe, but not Africa.

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What happens to the mantle as DIVERGENT plates move?

• It sinks into the plate and destroys it.

• Nothing, only the plates are moving.

• It rises and adds rock to the edges of the plate.

• It destroys part of the plate that sinks into the mantle.

Tags

NGSS.MS-ESS2-1

How do geologists use GPS to study plate motion?

• Geologists use GPS on their cell phones to track plate motion
• Geologists use permanent GPS units installed in solid rock to track plate motion
• Geologists put GPS units on trucks parked in different places to track plate motion
• Geologists don't use GPS to track plate motion

Tags

NGSS.HS-ESS1-5

How is plate motion observed?

• Plates move fast enough to tell by comparing pictures of a place from year to year
• Plates don't move, so geologists can't see anything
• Geologists are so good at seeing plate motion that they can watch them move
• Plates move so slowly that geologists can only measure their speed with GPS

Tags

NGSS.MS-ESS2-3