1. SCIENCE 2009
Structures
By: choclaterice-1

2. Great Wall of China
 The Great Wall of China
is a man made structure.
 It is a solid structure
 it is about 6,400km
long.
 Purpose to keep
intruders out and away
and maintain peace.

3. Wheel Chair
 The Wheel chair
is a man made
structure
 It is a frame
structure.
 It is for handicap
people that are
paralyzed.

4. Chicken eggs
 The chicken
egg is a shell
structure
 It can be any
size depending
on the chicken.
 The purpose is
to hold baby
chickens inside
so they can
hatch.

5. Bricks
The brick is a solid
structure.
 It is man made.
 purpose is to build.

6. Helmet
 The helmet is
a solid structure.
 it is for safety.
 The purpose
is to be safe for
construction.

7. Beam bridge
 is most
common
bridge used
 simple is
supported at 2
ends
 longer ones
supported by
additional piers

8. Truss Bridge
 light weight but strong
 made of trusses along
its side
 Shell structure

9. Suspension Bridge
 Hangs between two
ends that hold it up.
 modern suspension
bridge has tall towers
on either end that
support the main
cables.
 main cables are
anchored to concrete
at each end of the
bridge.

10. Arch Bridge
 designed to withstand
heavy loads
 dynamic load of people
and other traffic causes
each piece of wood or
stone in the arch to push
against the piece next to it.
 This push is eventually
transferred to the end
supports, which are
embedded in the ground.