Transcript Insects

INSECTS
Insects
Created by
Susan Pool 5/2006
Insects Can Fly!
• There are millions of
insects. Some of them
fly, and some do not.
They Are Everywhere!
• Did you know that there
are many more kinds of
insects on earth than any
other kind of living
creature? But 95% of all
the animal species on the
earth are insects! Millions
of insects can exist in a
single acre of land!
Lots of Beetles
• There are more beetles
than any other kind of
insect!
Insects Are Big Eaters!!
• Insects eat
more plants
than all the
other
creatures on
earth!
All Insects Must Have:
• three body parts - a
head, thorax, and
abdomen
• six jointed legs
• two antennae to sense
the world around them
• an exoskeleton
(outside skeleton)
Are Spiders Insects??
• If these things are not
true then it is not an
insect. A spider is not
an insect because it
has eight legs and
doesn’t have three
body parts!
Some Insects Can Fly
• Flying insects have
either two or four
wings.
• They have muscles in
their wings that help
them to fly fast or
slow or to hover like a
helicopter.
Too Many Legs???
• Centipedes
and
millipedes
are not
insects
because
they have
too many
legs!!!
Life Cycles
• Many insects, such as the
Butterfly and the Moth go
through stages of growth.
First as an egg, then as a
larva (like a worm) then
into a cocoon (pupa).
Finally the new insect
breaks out as an adult. It is
then that the wings grow
and the insect can fly.
Insects are Helpful
• Insects are directly
useful to humans by
producing honey, silk,
wax, and other
products. They also
carry pollen from
flower to flower.
Pests!!!
• Some insects are pests
because they damage
crops and they bite
and cause pain to
people.
• This is a tick. Ticks
can be harmful.