Title: Desert Animals
1Desert Animals
2What is a desert?
- The desert is a land of extremes extreme heat
and extreme dryness sudden flash floods and cold
nights. Because deserts are such a difficult
places to live in they often have names likes
"Death Valley," "the empty quarter," and "the
place from where there is no return."
3How dry is a desert?
- Deserts are usually very, very dry. Even the
wettest deserts get less than ten inches of rain
a year. - In most places, rain falls steadily throughout
the year. But in the desert, there may be only a
few periods of rains per year with a lot of time
between rains. When it does rain, there may be
quite a downpour! After the rain, desert flower
bloom
4Is it always hot in a desert?
- Everyone knows that during the day many deserts
are hot, very hot. Temperatures can get as high
as 100 degrees fahrenheit are not uncommon. Yet
at night, the same deserts can have temperatures
fall into the 40s or 50s? With no clouds or plant
life to keep the heat in, it begins to cool as
soon as the sun goes down.
5Types of desert
- Believe it or not, deserts come in two varieties
hot and cold.
The Antarctic is actually the Earths largest
desert. The main form of precipitation in a cold
desert is snow -- but only ten inches or less per
year.
The Sahara is the largest hot desert. These are
covered in sand and rock.
6Can any plants grow in a desert?
- Deserts are the home to many living things.
- Plants that grow in a desert have to be
especially adapted to the dry conditions. They
must be able to collect and store water and
reduce water loss. - Desert plants look quite different to plant that
grow in other places.
7Which animals live in the desert?
- Animals in the desert must survive the intense
heat, searing sun, and lack of water. Animals
that live in the hot desert have many
adaptations. Some animals never drink, but get
their water from seeds (some can contain up to
50 water) and plants. Many animals are
nocturnal, sleeping during the hot day and only
coming out at night to eat and hunt. Some animals
rarely spend any time above ground.
8Desert Animals
- There are many animals in the desert.
- They can survive by eating other animals or by
eating plants that store water. - To protect them from the hot sun, they stay in
the shade or in their shelter. - Animals may build their shelters inside plants.
- Some animals sleep during the day and are active
at night. - Some animals have hard shells to protect them
from losing much water. - More animals live in hot deserts than in cold
deserts.
9Anteater
Camel
Roadrunner
Gila monster (lizard)
Scorpion
10Camels
- Camels are well suited to survive the conditions
of the desert. The hump in their back stores fat
they store water in the lining of their
stomachs. Camels have extra long eyelashes to
keep the sand out of their eyes, and big flat
feet to help them walk through the sand.
11Some of the animals that live in the desert.
A sidewinder is a small agile snake. It is mainly
nocturnal and takes shelters from the heat of the
day in the burrow of another animal or under a
bush.
The fat sand rat overcomes the problem of the
unpredictability of desert food supplies by
laying down a thick layer of fat all over its
body when there is plenty of food It then lives
off this fat when food is short. Active day and
night, this gerbil darts about collecting seeds
which it carries back to its burrow.
12Red Kangaroo
- Like many desert animals, red kangaroos prefer to
sleep in the day, when the desert is at its
hottest, and wake up at nighttime, when it is
actually very cold. That explains why many
animals have fur, even in hot deserts.
13Desert Lark
- The desert larks feathers are a light brown
color, which means that it is well camouflaged in
the desert sand.