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Several factors determine the climate in a particular region.
five
5
2
Which instrument do you need to measure each atmospheric condition?
Write sentences in your notebook.
a)
air pressure
c)
the temperature
b)
the direction of the wind
d)
the amount of precipitation
You need a/an
...
to measure
...
3
T
h
i
n
k
!
Why are places near the Equator warmer than places near the poles? Draw a diagram
of the Sun and the Earth to explain this.
4
Find out about local temperatures.
a)
Use a thermometer to record the temperature
for one week.
b)
Check the temperature at the same
time every day: for example, at noon.
5
3
QUIZ
Check your learning.
Why are there different climates?
Water
Bodies of water affect climate.
Why? Because water takes
longer to heat up and cool
down than land. If land is close
to water, the temperature
changes more slowly.
Latitude
Can you see the lines of latitude
around the Earth in this picture?
Latitudes that are close to
the Equator are hotter than
latitudes farther away. Each
colour represents a different
climate.
Altitude
Altitude, the height of land above sea
level, affects climate. At higher altitudes,
like on a mountain, temperatures are
lower and there is more precipitation
than at lower altitudes like valleys. This
happens because when it is cold, clouds
cannot hold water vapour, so precipitation
takes place.
Equator
N
S
Tropic of Cancer
Tropic of Capricorn
Antarctic Circle
Arctic Circle
Frigid zone
Temperate zone
Torrid zone
or the Tropics
A
C T I V I T I E S
c)
Write the temperature in a table every day.
d)
Draw a graph to present your information.
e)
Does your graph show weather or climate?