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STORM STORY 6-7
Measuring wind
Wind is measured on the Beaufort scale, which has a range of
0 to 12. While 0 indicates calm, 12 means a very strong wind, like
a hurricane, which can blow away houses.
Warm air, being lighter, rises. Which way does Wind at 1–5 kmph is light
This creates a low-pressure it blow? air: smoke gently drifts in
area over the land. the direction of the wind.
Wind does not
Land and the air above it heat blow in a straight Wind at 30–39 kmph is
up faster than water. line. Its direction a fresh breeze: small
is affected by the trees begin to sway.
rotation of the
earth. So it follows
a curved path!
In the Northern
Hemisphere, winds
blow towards the
right. In the Southern
Hemisphere, they
blow towards the
left. This is called the
Coriolis effect.
In the Northern Hemisphere,
winds blow towards the right.
Wind at 60–74 kmph is a
strong gale: it becomes
difficult to walk in a gale.
In the Southern Wind at more than 120 kmph
Hemisphere, is a hurricane: it can cause
winds blow a lot of destruction.
towards the left.
Coriolis Effect
Measuring wind
Wind is measured on the Beaufort scale, which has a range of
0 to 12. While 0 indicates calm, 12 means a very strong wind, like
a hurricane, which can blow away houses.
Warm air, being lighter, rises. Which way does Wind at 1–5 kmph is light
This creates a low-pressure it blow? air: smoke gently drifts in
area over the land. the direction of the wind.
Wind does not
Land and the air above it heat blow in a straight Wind at 30–39 kmph is
up faster than water. line. Its direction a fresh breeze: small
is affected by the trees begin to sway.
rotation of the
earth. So it follows
a curved path!
In the Northern
Hemisphere, winds
blow towards the
right. In the Southern
Hemisphere, they
blow towards the
left. This is called the
Coriolis effect.
In the Northern Hemisphere,
winds blow towards the right.
Wind at 60–74 kmph is a
strong gale: it becomes
difficult to walk in a gale.
In the Southern Wind at more than 120 kmph
Hemisphere, is a hurricane: it can cause
winds blow a lot of destruction.
towards the left.
Coriolis Effect
