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Level 2 Continental Drift & Seafloor Spreading

Total questions: 18

Worksheet time: 33mins

Name
Class
Date
1.

The preserved remains or traces of an organism that lived in the past, which shows the continents used to be together.

a)

Evidence from Fossils

b)

Evidence from Mid-Ocean Ridges

c)

Evidence from Deep Ocean Trench

d)

Evidence from Subduction.

2.
How are fossils created?
a)
A. Traces of organisms harden like rock. 
b)
B. Dead organisms are quickly buried for millions of years.
c)
C. Animals get trapped.
d)
D. All of the above
3.
What does the theory of continental drift state?
a)
The continents were once joined in a super-continent and have moved over time
b)
Continents are stationary and do not move
c)
The Earth is broken into lithospheric plates that move due to convection currents
d)
none of the above
4.
Who is the scientist who proposed Continental Drift Theory?
a)
Albert Einstein
b)
Alfred Wegener
c)
Isaac Newton
d)
John Dalton
5.
What was the name given to all the continents when they were joined as one super continent? 
a)
Supreme Continent
b)
Eurasia
c)
Plate tectonics
d)
Pangea
6.

This was a large, ancient landmass that was composed of all the continents joined together

a)

seafloor spreading

b)

continental drift

c)

Pangaea

d)

Eurasia

7.
Which of the following is the corresponding oceanic land form for canyons? 
a)
Mountain 
b)
trench 
c)
plains
d)
mid-ocean ridge 
8.
Younger sea floor crust is located...
a)
farther from the mid-ocean ridges
b)
at the mid ocean ridges
c)
at the subduction zone
d)
near the continents
9.
Which landform is represented by letter A?
a)
continental shelf
b)
continental slope
c)
abyssal plain
d)
trench
10.
On the bottom of the ocean, there is a mountain range that divides the ocean floor into two parts.  This area is also known as underwater volcanic mountains.
a)
continental shelf
b)
continental slope
c)
abyssal plain
d)
mid-ocean ridge
11.

Convection currents in the Earth's mantle are caused by

a)

Less dense hot magma moving downward

b)

Less dense hot magma moving upward

c)

Tectonic plate movement

d)

More dense cooler magma moving upward

12.

Convection currents in the mantle are caused by

a)

heat coming from core of the Earth

b)

heat coming from the crust of the Earth

c)

heat coming from the sun

d)

cooling due to evaporation on the Earth's surface

13.

The cycle that powers the seafloor spreading, continental drift and tectonic plates it called

a)

conduction currents

b)

radiation

c)

condition currents

d)

convection currents

14.

In convection, COOLER magma

a)

Rises

b)

Sinks

15.

In convection, WARM magma

a)

Rises

b)

Sinks

16.
What happens when Subduction occurs?
a)
Parts of the crust fall into the mantle
b)
Parts of the crust fall into the core
c)
Parts of the crust fall into space
d)
None of the Above
17.

Process by which new ocean crust forms.

a)

Seafloor spreading

b)

Continental drift

c)

Mid-ocean ridge

d)

Rift

18.
True or False : Sea-floor Spreading adds new material to the ocean floor?
a)
True
b)
False

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