WorksheetsWater on Earth
Total questions: 30
Worksheet time: 15mins
Where is most freshwater held?
Groundwater
Lakes and rivers
Glaciers
Atmosphere
Biosphere
What is a polar molecule?
It is either positive or negative
It is always positive
It is always negative
It is "+" on one side and "-" on the other
It has the shape of "Mickey Mouse" ears
What would need to happen for the oceans to become more salty?
The world become warmer
The oceans get more water
The oceans get deeper
Glaciers grow on land
The oceans get colder
What is the bottom of the food chain in the oceans?
Photoplankton
Zooplankton
Benthic animals
Small fish
Whales
Why is Calcium important to organisms in the oceans?
Calcium hold nutrients for plants to eat
Calcium helps make shells, CaCO3
Calcium helps develop deep water currents
Calcium helps plants feed on sunlight
Where are dead zones usually? Where do they develop?
In the deep zones of the ocean
Along coastlines in the tropics
Along coastlines in the polar regions
Near mouths of rivers
In the shallow zones of the ocean
Where does the Iron in the oceans come from?
Melting snow
Dust from the desert
Precipitation
Decomposing animals
In a perfect world, how often would a high tide occur?
Slightly less than every 12 hours
Exactly every 12 hours
Slightly more than every 12 hours
It depends upon the strength of the Sun
It depends upon the phase of the Moon
When are the highest, high tides? That would be the largest tidal ranges.
Sun, Earth and Moon in a straight line
Sun, Earth and Moon at a 90º angle
Moon at a quarter phase
High tides are all pretty much the same
What are low, high tides called? This would mean a shallow tidal range.
Spring tides
McClain tides
Pie tides
Neap tides
Low tides
How do "free flying" things move in the Northern hemisphere?
Always west
Always east
Always to the right
Always to the left
Straight ahead
What force makes free moving objects turn?
Coriolis effect
Mikroft effect
James Dean effect
Hess effect
Centripital effect
What causes surface currents?
Density differences
Uneven heating of the ocean by the Sun
Wind
Changing tides
Where does the Gulf Stream run?
Cuba, up the coast of Africa to Northern Europe
Equatorial regions, past Florida, up to Northern Europe
Northern Europe, down the east coast of USA, to Gulf of Mexico
Around the Gulf of Mexico, to Florida and back
What two things have the largest effect on density of sea water?
Mass and salinity
Mass and depth
Salinity and depth
Salinity and albedo
Salinity and temperature
What part of the ocean will have the greatest biomass?
Surface layers
Transition zones
Deep zones
All about the same
What causes the largest increase in salinity of the oceans? This is a long time question.
Precipitation
Animals making shells
Dust storms from Africa
Rivers and streams and weathering of mountains
Evaporation
What is the most common compound in seawater?
CaCO3
NaCl
MgCl
H2SO4
H20
What are Gyres?
North to south currents
South to north currents
Giant "swirlies" in the ocean basins, going clockwise
Giant "swirlies" in the ocean basins, going anti-clockwise
A sandwich?
What direction to cold water currents go? Northern hemisphere.
East
West
North
South
How does water move through an aquifer?
Infiltration
Percilation
Runoff
Precipitation
Evaporation
Which term would refer to the amount of water that an aquifer can hold?
Permiability
Porosity
Discharge rate
Incharge rate
Diatom rating
What happens when the water table comes into contact with the surface of the land, in the desert?
Photoplace
Oasis
Windstream
Well
Ecotronic zone
About how much of the Earth's surface is covered by ocean?
25%
50%
70%
97%
About how much of the Earth's water is in the oceans?
25%
50%
70%
97%
What is the water cycle?
Water that moves through all the spheres of the Earth
Water that has gone to the north polar region, and also to the south polar region.
Water that has broken down into elements, and returned to the compound H2O
Water that has evaporated and precipitated at lease once
Water that has been a solid and also a liquid
In what area does the temperature of water change rapidly with depth?
Pychnocline
Halocline
Thermocline
Chronocline
Heliocline
What location is above water, but is also a section of a mid-ocean divergent boundary?
Hawaii
Iceland
Cascadia volcanic arc
Cuba
Bermuca
You are on a beach in the St. Monroe Antillies Islands. The Sun is directly overhead, and the Moon is right next to the Sun. What is happening with the tide.
Tide is almost at its peak
Tide is at its peak
Tide is slightly past its peak
We are near low tide
Does it matter? I am on a beach on the Island of St. Monroe!
Why does the Gulf Stream usually have clouds over it?
The cold water in the stream makes a high pressure system over it.
The cold water in the stream makes a low pressure system over it
The warm water in the stream makes a high pressure system over it
The warm water in the stream makes a low pressure system over it
It is in the Bermuda Triangle, so enough said!! ; /
