Seafloor Spreading

Seafloor Spreading

6th - 8th Grade

26 Qs

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Seafloor Spreading

Seafloor Spreading

Assessment

Quiz

Other Sciences

6th - 8th Grade

Medium

Created by

Cory burnett

Used 8+ times

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26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

In the Atlantic ocean, where is the youngest seafloor located?

Towards the edges, near the eastern and western continents
Towards the middle of the ocean
Towards the north and south poles
Young seafloor is located randomly throughout the ocean

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

How do scientists figure out the age of the seafloor?

They research it from ancient sea maps that trading vessels would use in the 1700s
They use the moon phases and eclipses to calculate the age
They use seismographs and the depth as well as location of earthquakes to calculate the age
They take drill ships to many locations in the oceans and collect, then date, rock samples. 

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

True or False: The continents on the eastern (the Americas) and western (Europe, Africa) side of the Atlantic Ocean are moving closer together. 

True
False

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is FALSE about the age pattern on the seafloor in the Atlantic Ocean? 

The pattern is symmetrical on each side of the Mid-Atlantic ridge (plate tectonic boundary)
The oldest seafloor can be found towards the edges of the ocean, near the eastern and western continents
The youngest sea floor can be found towards the edges of the ocean, near the eastern and western continents
Seafloor near the Mid-Atlantic ridge (plate tectonic boundary) can be up to 10 million years old

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What two words are BEST used to describe how the seafloor spreads?

Magma and convection
Earthquakes and convection
Magma and convention
Volcanoes and earthquakes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

True or False: Our continents will eventually become a supercontinent (like Pangaea) again, far in the future

True
False

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Massive pieces of land that are part of the Earth's crust and upper mantle

Tectonic plates
Trenches
Divergent boundary
Continental shelves

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