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It's All About the Water...Systems!  Unit Test #1

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
Remember when the water seemed to “move” when you placed a freezie inside of a beaker?  What happened?
a.
The cooler water is more dense than warmer water and sinks.  As it does, it pushes the warmer water upward and creates a current.
c.
The warmer water is more dense than cooler water and sinks.  As it does, it pushes the warmer water upward and creates a current.
b.
The changes in temperature in the water creates a convection current.
d.
Both B and C.
 

 2. 
Currents caused by temperature differences are called....
a.
overturns
c.
convection currents
b.
gyres
d.
the Coriolos Effect
 

 3. 
What occurs in the spring and fall seasons when convection currents mix with the surface and bottoms waters?
a.
Overturns.
c.
Turn arounds.
b.
Convection currents
d.
None of the above.
 

 4. 
What happens when conditions are ideal for overturns to happen?
a.
Chemicals mix forming new substances.
c.
Nutrients and dissolved oxygen are redistributed throughout a body of water like a lake.
b.
Cold water becomes increasingly more dense.
d.
Algae, cold water, warm water and dissolved oxygen are redistributed throughout a body of water like a lake.
 

 5. 
Ocean currents, like the ones you reviewed in your “Why Do We Use Currents to Chart Courses?” challenge, do form consistent, circular patterns called...
a.
convections
c.
tropical depressions
b.
gyres
d.
overturns
 

 6. 
Some of the major ocean currents include the following:
a.
The Gulf Stream
c.
The North Atlantic Current
b.
The Greenland Current
d.
All of the above.
 

 7. 
Earth is not simply a stationary ball floating in space!  What does it do?
a.
It spins on its axis and revolves around the sun at the same time!
c.
Its waters are pulled by the gravitational force of both the Sun and the Moon.
b.
Strong winds blow across its surface and massive landforms mark the ocean floor.
d.
All of the above.
 

 8. 
A glacier is a large mass of ice and snow that slowly flows over land.
a.
False
b.
True
 

 9. 
Fresh water is water that contains a low concentraion of dissolved salts.
a.
True
b.
False
 

 10. 
Evaporation is a change of state from a liquid to a gas.
a.
True
b.
False
 

 11. 
The five main gyres of the world are the following:
a.
The North Atlantic, The South Atlantic, The South Indian, The North Pacific, The South Pacific.
c.
The North-West Atlantic, The South-East Atlantic, The South Indian, The North Pacific, The South Pacific.
b.
The North -East Atlantic, The South-West Atlantic, The South-Eastern Indian, The North Pacific, The South Pacific.
d.
The North Atlantic, The South-Western Atlantic, The South Indian, The North-Eastern Pacific, The South Pacific.
 

 12. 
What contributes around continental glaciers to ocean currents?
a.
warmer waters of the Gulf Stream.
c.
Migration of whales and other aquatic animals.
b.
Cold, frigid water.
d.
Salt content of water.
 

 13. 
A large glacier that covers most of this landform is one that scientists are worried about melting and contributing to climate change.
a.
Arctic
c.
Greenland
b.
Antarctica
d.
Ontario
 

 14. 
When you were observing your beakers filled with water and cold freezies by making good notes in your Science Thinking Books, you saw how _________________ causes a cloudy coating on your beakers.  Moist air rises and cools.
a.
evaporation
c.
sublimation
b.
condensation
d.
cold water currents
 

 15. 
A moulin is....
a.
Surface run off from a glacier as water moves from one end of a glacier to another.
c.
A cool dance move.
b.
something that happens when ocean currents suddenly change from warm to cold.
d.
A moulin or glacier mill is a roughly circular, vertical to nearly vertical well-like shaft within a glacier through which water enters from the surface.
 

 16. 
Where do glaciers come from?
a.
Big chunks of ice collect over time to form them.
c.
Masses of ice and snow built up over thousands of years - on the lands near the Earth’s poles.
b.
Masses of ice and snow built up over thousands of years - normally in the high altitudes of mountains.
d.
Both B and C.
 

 17. 
A continental glacier covers an entire continent such as the ones found in....
a.
Greenland and the Andes Mountains.
c.
Antarctica and Greenland.
b.
Greenland and the Arctic.
d.
All of the above.
 

 18. 
What effect do glaciers have on the environment?
a.
Cold air flows off, cooling the surrounding areas and helping to form strong winds know as polar easterlies.
c.
Store huge amounts of fresh water.
b.
Change landforms due to their massive weight, size and movements.
d.
All of the above.
 

 19. 
Fossils of animals (marine) are found in places where no oceans exist!  Why?
a.
Glacial movement places them there.
c.
Marine life started off as land animals.
b.
There were once oceans everywhere.
d.
It remains a mystery!
 

 20. 
When the ice began to melt at the end of the last Ice Age,what happened?!!
a.
Sea levels rose.
c.
Coastal lands were covered with water.
b.
Glaciers retreated/receded.
d.
Both A and B.
 

 21. 
Between 5 degrees North and 5 degrees South latitude, where the winds are generally sporadic and have little or no velocity. This region is called the doldrums.
a.
True
b.
False
 

Short Answer
 

 22. 
Visit the web site below:


1. Play the interactive games.
2. View the videos and animation.  Read the information on the page.
3. Create a web organizer to gather your thoughts on what you learned from the games and video.
 



 
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