Why does warm air rise and cold air sink?

Because warm air is less dense than cold air.

Land heats & cools faster than the ocean. What happens to the air on the beach at night?

the air flows from the land to the ocean

The Gulf Stream carries warm water to the North Atlantic Ocean, which contributes to

a mild climate for the British Isles

Movement of ocean currents is mainly caused by

temperature differences of the water

How does the ocean affect weather on Earth?

water evaporates from the ocean, causing rain

Movement of ocean currents is mainly caused by

temperature differences of the water

How do warm-currents affect the coastal areas along which they flow?

they create unusually warm climates for the latitude

If a coastline is located very far north and it is near a warm ocean current.....

the climate will be warmer than normal for that latitude

If the Great Ocean Conveyor Belt stopped flowing what would most likely be the result?

There would be dramatic climate changes around the world

In a lava lamp, the liquid is rising and sinking. Which statement about the liquid is true?

The cooler liquid sinks while the warmer liquid is rising

Cold currents are most likely to be located deeper in the ocean than warm currents because

cold water is more dense and sinks

Which statement best describes the effect of the Great Ocean Conveyor Belt?

it influences climate by distributing energy from the sun

What causes convection cells in the Earth's atmosphere?

warm air rises at the equator, & cold air sinks at the poles

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Ocean Currents

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Science Chapter 5 review

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Questions 22

Answers

1
San Diego and Nashville are on nearly the same latitude. Why are the climates so different?
cloud cover
nearness to ocean currents
the distances from the equator
the amount of solar radiation
2
Why does warm air rise and cold air sink?
Because cold air is less dense than warm air.
Because warm air is less dense than cold air.
Because cold air is less dense than warm air.
Because warm air has more pressure than cold air does.
3
What geographic obstacle causes water to condense as air moves across it?
savanna
valley
mountain
forest
4
As water gets denser, how does it move?
expands toward warmer water
sinks toward the ocean floor
gets pulled up by evaporation
gets pushed toward the poles
5
Land heats & cools faster than the ocean. What happens to the air on the beach at night?
the air flows from the ocean to the land
the air moves along the coast
the air is still
the air flows from the land to the ocean
6
Parts of Hawaii are very dry while other parts get a lot of rain. What causes this to happen?
mountain ranges
frequent earthquakes
soil with a lot of sand
high mean elevation
7
The Gulf Stream carries warm water to the North Atlantic Ocean, which contributes to
a cold water surface current that flows to the British Isles
a harsh winter in the British Isles
warm-water surface current that flows along the coast of CA
a mild climate for the British Isles
8
Uneven heating of Earth's surface by the Sun causes which of these?
nutrient cycling
volcanic activity
wind patterns
cloud formation
9
Surface currents are caused by....
the equator
winds
floods
warm water
10
Movement of ocean currents is mainly caused by
temperature differences of the water
storms forming over the ocean
tides
gravitational pull from the sun
11
Which of these is a cold water current?
East Australian Current
Equatorial Counter current
North Equatorial current
Humboldt current
12
How does the ocean affect weather on Earth?
water evaporates from the ocean, causing rain
salt in the ocean dries the air, causing it to heat and rise
waves in the ocean push the air above, which causes storms
ocean water is cooler than air above; so the temp. is low
13
Movement of ocean currents is mainly caused by
temperature differences of the water
storms forming over the ocean
gravitational pull from the sun
tides
14
How do warm-currents affect the coastal areas along which they flow?
they create unusually warm climates for the latitude
the make the coastal climate cooler than the inland climate
they create greater rainfall along the coast
they create unusually cool climates for the latitude
15
Which currents carry warm water away from the equator?
surface currents
freezing
deep currents
evaporation
16
If a coastline is located very far north and it is near a warm ocean current.....
spring is shorter than usual for that latitude
spring is longer than normal for that latitude
the climate will be warmer than normal for that latitude
the climate will be colder than normal for that latitude
17
Why are the waters near the poles the densest?
They are the coldest waters
They are the shallowest waters
They are the deepest waters
They are the warmest waters
18
If the Great Ocean Conveyor Belt stopped flowing what would most likely be the result?
Ships would not be able to make trips around the world
The tides on the planet would increase dramatically
There would be dramatic climate changes around the world
The amount of oxygen in the atmosphere would increase
19
In a lava lamp, the liquid is rising and sinking. Which statement about the liquid is true?
The cooler liquid is rising while the warmer liquid sinks
Cool & warm liquid are mixed so its all the same temperature
Cool liquid is in the middle & the warm liquid is around it
The cooler liquid sinks while the warmer liquid is rising
20
Cold currents are most likely to be located deeper in the ocean than warm currents because
cold water is more dense and sinks
ocean tides force cold water downward
winds push the cold water down
cold water has less salt to help it freeze and sink
21
Which statement best describes the effect of the Great Ocean Conveyor Belt?
it causes hurricanes to move in a counterclockwise direction
It prevents tsunamis from occurring
it controls the high and low tides
it influences climate by distributing energy from the sun
22
What causes convection cells in the Earth's atmosphere?
warm air rises at the equator, & cold air rises at the poles
warm air sinks at the equator, & cold air rises at the poles
cold air rises at the equator, & warm air sinks at the poles
warm air rises at the equator, & cold air sinks at the poles

Ocean Currents Flashcards | StudBud