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Worksheetscurrents
Total questions: 51
Worksheet time: 33mins
Name
Class
Date
1.
What force guides the movement of deep currents?
a)
density differences
b)
wind
c)
Coriolis Effect
d)
continental barriers
2.
The horizontal movement of ocean water that is caused by wind and occurs at or near the ocean's surface is a(n) _________________.
a)
density current
b)
surface current
c)
turbidity current
3.
The two categories of ocean currents are _____________________.
a)
salinity, temperature
b)
density, temperature
c)
surface, deep
d)
freshwater, saltwater
4.
Cold ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
5.
Two types of water currents are
a)
local and global
b)
sea and land
c)
surface and deep
d)
warm and cold
6.
Ocean currents have an affect on which two things
a)
climate and weather
b)
temperature and density
c)
land and sea
d)
equator and poles
7.
Temperature affects this greatly
a)
color
b)
density
c)
chlorine
d)
thermocline
8.
The amount of dissolved solids present in the water
a)
salinity
b)
chlorine
c)
nitrogen
d)
density
9.
Surface currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
10.
Deep Ocean currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
11.
Deep Ocean currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
12.
As you go deeper in the ocean, the water is colder and less salty.
a)
True
b)
False
13.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
14.
Constantly moving system of deep-ocean circulation driven by temperature and salinity. It moves water around the globe.
a)
California Current
b)
Global Conveyor Belt
c)
Surface Currents
d)
Gulf Stream
15.
What process brings the deep cold ocean currents up to the surface?
a)
Conduction
b)
Global Wind Patterns
c)
Convection Currents
d)
Temperature and salinity
16.
Why are surface currents at the surface of the ocean?
a)
colder temperature
b)
colder temperature & more salinty
c)
warmer temperature & less salinty
d)
less salinty
17.
What process brings the deep cold ocean currents up to the surface?
a)
Conduction
b)
Global Wind Patterns
c)
Convection Currents
d)
Temperature and salinity
18.
A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface.
a)
Gulf Stream
b)
Global Conveyor Belt
c)
Surface Current
d)
Gyre
19.
Constantly moving system of deep-ocean circulation driven by temperature and salinity. It moves water around the globe.
a)
California Current
b)
Global Conveyor Belt
c)
Surface Currents
d)
Gulf Stream
20.
What creates the air pressure difference between the equator and the poles?
a)
The length of the seasons
b)
The shape of the earth
c)
The duration of the solar year
d)
The amount of direct sunlight each area receives
21.
Which term best describes how the earth's atmosphere is heated?
a)
spirally
b)
unevenly
c)
circularly
d)
kinetically
22.
What causes wind to blow?
a)
Differences in longitude
b)
Shock waves from clouds
c)
Differences in air temperature and pressure
d)
The rotation of earth
23.
What causes warm air to rise?
a)
The fact that it's less dense than cold air
b)
The fact that it weighs more than cold air
c)
The fact that it has higher pressure than cold air
d)
The fact that it's more dense than cold air
24.
What can you infer about the water at the surface of the ocean, compared to the water hundreds of meters below?
a)
Surface water tends to be saltier
b)
Surface water tends to be denser
c)
Surface water tends to be warmer
d)
Surface water tends to be calmer
25.
Wind always blow from an area of ____ pressure to an area of ____ pressure
a)
low; high
b)
high; low
26.
Cool air sinking causes and area of ____ pressure
a)
Low
b)
Medium
c)
High
27.
Cold water from deep in the ocean contains
a)
sea turtles
b)
surface currents
c)
solar energy
d)
nutrients
28.
Energy for convection on the Earth comes from...
a)
The sun
b)
The moon
c)
Solar winds
d)
The ocean
29.
In convection, WARM air
a)
Rises
b)
Sinks
30.
In convection, COOL air
a)
Rises
b)
Sinks
31.
The hot "line" around the center of the earth is called the
a)
Equalibrium
b)
Equator
c)
Tropic of Cancer
d)
Tropic of Capricorn
32.
This is an image of how upwelling occurs. Upwelling is important to organisms because...
a)
when local wind patterns blow along the north west coast, they cause local surface currents to move away from the shore.
b)
upwelling causes warm water to flow to the British Isles and creates a mild climate there.
c)
upwelling brings nutrients to the surface of the ocean to support the growth of phytoplankton and zooplankton.
33.
What factors create deep ocean currents?
a)
Increase in salinity; increase in temperature
b)
Decrease in salinity; decrease in temperature
c)
Increase in salinity; decrease in temperature
d)
Decrease in salinity; increase in temperature
34.
The amount of matter in a given space is called ___.
a)
volume
b)
mass
c)
desity
d)
pressure
35.
If a liquid has a mass of 20 g and a volume of 4 mL, what is the density of the liquid?
a)
5 mL/g
b)
4 g/ mL
c)
5 g/ mL
d)
4 mL/ g
36.
What is the initial source for global winds and convection in the atmosphere?
a)
Unequal heating of the Earth by the sun.
b)
The rotation of the Earth
c)
Moon's gravity
d)
continental deflection
37.
Convert 5000 mL to L
a)
50 L
b)
0.5 L
c)
5 L
d)
500 L
38.
The global movement of air occurs in convection cells. In general, how does air move?
a)
from areas of higher pressure to areas of lower pressure
b)
From areas of lower pressure to areas of higher pressure
c)
from areas of higher temperature to areas of lower temperature
d)
from areas of lower temperature to areas of higher temperature
39.
Compared with surface currents, deep currents are
a)
colder and less dense.
b)
warmer and less dense.
c)
warmer and denser.
d)
colder and denser.
40.
Which currents carry warm water away from the equator?
a)
Deep currents
b)
Surface currents
c)
Evaporation currents
d)
Freezing currents
41.
The density of ocean water increases when it
a)
joins the Gulf Stream.
b)
gets colder.
c)
gets warmer.
d)
turns to ice
42.
What happens to seawater that is left behind after evaporation or freezing?
a)
It gets hotter
b)
It gets less densde
c)
It moves faster
d)
Its salinity increases
43.
What is A?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
44.
What is B?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
45.
What is C?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
46.
Water turns from liquid into vapor.
a)
Condensation
b)
Runoff
c)
Precipitation
d)
Evaporation
47.
What heats up faster?
a)
1000ml water
b)
1000ml soil
48.
What cools faster?
a)
1 L of water
b)
1 L of soil
49.
At what temperature is water most dense?
a)
32 degrees F
b)
0 degrees C
c)
4 degrees F
d)
4 degrees C
50.
At what temperature does liquid water turn into ice?
a)
32 degrees F
b)
0 degrees C
c)
4 degrees F
d)
4 degrees C
51.
Water is unique because as a solid, it is ____ dense than it is as a liquid.
a)
less
b)
more
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