Page 65 - How It Works - Book of Amazing Answers To Curious Questions, 12

---- Environment Q�
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What do thefast symb mean

High pressure Wind Low pressure
Weather here will be clear and dry, due to The conditions at this point will be windy. At the centre of these
the high pressure. If this high pressure This is indicated by the position of the circular patterns of
occurs in summer weather will be warm, isobars; the closer together they are the isobars is where systems
whereas in winter it will be cold and crisp. windier the conditions. of high or low pressure lie.
Where there is low
Isobars pressure conditions will
These indicate be rainy and windy.
atmospheric
pressure. Areas of
equal atmospheric Occluded front
pressure are joined This is where one front
together with the 'catches up' with
lines shown and the another. In this example,
numbers indicate the cold has caught up
pressure measured with the warm. Occluded
in millibars. Lower fronts cause the weather
numbers indicate to change quite quickly
low pressure, and, in this case,
while higher become similar to that
numbers indicate of a cold front.
h1gh pressure.
Cold front In between Wann front
As with any cold front, the weather here will After the passing of the warm front and The warm front will cause steady
be expected to be cool with heavy rainfall and before the arrival of the cold front rainfall, followed by drizzle, accompanied
possibly even thunderstorms. This will be conditions should be clear and dry, but by cloudy skies. These are typical
followed by showers. normally only for a short period. conditions caused by any warm front.

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How do golden eagles hunt?

Flexible neck
Telescopic vision and terrifng talons Because the eyes are so large, they
can barely move in their sockets.
-be glad you're not a Scottish Instead the neck twists 270 degrees.

olden eagles are apex Large eyes
predators, adapted to Facing forward to
provide excellent
G hunt in very harsh
binocular vision.
landscapes. With a wingspan They can spot a
of more than two metres, they mountain hare from
two miles away.
are huge birds, capable of
lifting prey weighing as much
as five kilograms. There are
documented cases of golden
eagles attacking adult deer and
even a bear cub but their usual
targets are hares, foxes, grouse
and, on the coast, seabirds. Primary feathers
The gaps between the
Golden eagles nest in trees and 'fingers' of the primary
on remote mountain crags. They feathers help to fine-tune the
airflow over the wings.
can't hunt in thick forest so they
have specialised to scour moors Powerful wing muscles
and uplands. Food is much scarcer
Golden eagles can weigh up to 7kg
here and the eagles have to patrol but must be able to take off from the
huge territories; sometimes as ground in a single bound.
much as 16okm2. To do this they
Feathered legs
operate like stealth bombers, flying
Unlike the long, bony legs of a swan,
very high above the ground to scan these are short and well muscled,
a wide area without alerting their with feathers to keep them warm.
prey. They need to be able to soar
for hours at a time and strong Tail
The tail can act as a rudder, to Deadly talons
enough to kill whatever animal compensate for crosswinds or The curved claws restrain prey and kill it. Smaller
presents an opportunity. be spread wide to increase lift. animals are simply carried aloft, back to the nest.
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