Which of These Is a Reason that The Poles Are Colder than The Equator
Which of these is a reason that the poles are colder than the Equator?
greenhouse effect is more significant near the Equator
increased beam spreading at higher latitudes due to Earth being spherical
there are more volcanoes near the Equator which release heat
Question 21
At which position in the planet’s orbit would it be winter in the SOUTHERN hemisphere?
(Image not to scale!!!!)
seasons.png
A
B
C
D
Question 31
At what latitudes do we get consistent clouds and rainy conditions according to the 3-cell model of atmospheric circulation?
0 and 30
30 and 60
0 and 60
30 and 90
Question 41
The winds either side of the Equator (between 30 N and 30S) are called easterly winds. Look at the 3-cell model to work out which way easterly winds blow.
from the east to the west
from the west to the east
Question 51
Air moves from:
low pressure to low pressure areas
low pressure to high pressure areas
high pressure to low pressure areas
high pressure to high pressure areas
Question 61
Wind in the northern hemisphere is blowing from the North Pole towards the Equator. Due to the Coriolis effect, which direction will the wind actually blow?
wind directions.png
A
B
C
Question 71
How does the temperature of a gas or liquid affect density and therefore whether it rises or sinks?
Molecules which have a higher temperature move faster and so occupy more space. Warmer air or water is therefore less dense and will rise.
Molecules which have a higher temperature move slower and so occupy less space. Warmer air or water is therefore less dense and will sink.
Molecules which have a higher temperature move faster and so occupy more space. Warmer air or water is therefore more dense and will sink.
Question 81
What is the term we use to describe the layer in the ocean where density changes rapidly with depth?
thermocline
halocline
pycnocline
Question 91
Why is surface water near the Equator not likely to sink down into the deep ocean?
(Tip – use the profiles from Lecture 9 to help you.)
Because there is no density difference between the surface and deep ocean.
Because the surface water is much less dense than the deeper water and will not sink.
Because the surface water is much more dense than deeper water and will not sink.
Question 101
Which of the statements about “reverse osmosis” is FALSE?
For reverse osmosis to occur we have to apply pressure to the seawater so requires a lot of energy.
After reverse osmosis we will end up with greater amount of freshwater on one side of the membrane and a smaller quantity of much saltier water on the other side.
Reverse osmosis is where water molecules move from less salty water to more salty water through a membrane.
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