Fossils - make your own !
You may have seen them in a museum
or in books - fossil Dinosaur bones. Now you can create your own
"fossils", and it won't take a million years to do it!
|A fossil is the remains of a
once living thing that is preserved in rock. Usually the plant or
animal is buried in sediment (mud) in the absence of air, so it does
not rot away. As the mud hardens into stone, it preserves the shape of
the buried remains and can form an imprint.
Sometimes bone or shell turns to rock in
the exact shape of what was buried. So Dinosaur bones are not bones at
all, they are rocks in the shape of bone! Petrified wood will
is rock in the shape of the wood that was buried! Some
scientists think that the fossil making process takes a very, very long
time, maybe millions of years!
Here's how to make your own
"fossils" in a lot less time!
- Half fill an ice-cream container with sand and
make a hollow
- Place a shell or fern leaf at the bottom
- Pour in Plaster of Paris to fill the hollow and
smooth the surface
- Leave the plaster to set for about 3 or 4 hours
- Remove the hardened plaster from the sand and
you should have your own "fossil" imprint!
To make Plaster of Paris:
- Buy a bag from a local art supply store. Put about 2
cups of water into an ice-cream container.
- Sprinkle the plaster onto the water so it dissolves
gradually, stirring all the time.
- Keep adding more plaster until it thickens into a
paste, a bit like melted ice-cream.
FIND OUT MORE:-
- Cut the bottom off an ice-cream container to leave
the four sides. Push this into the ground around a foot print of an
animal or child. Pour in some plaster and you have made a cast your can
- Visit a local museum and look at any old bones or
fossils they have. Where did they come from? How old are they?
- Is there a place nearby where you can dig up your own
fossils to start a collection?
- The interactive pages...arrange the planets of our
- The interactive pages...uncover the hidden secrets of