PRESENTATION OUTLINE
Stage 1
A dinosaur dies and is buried before the remains are completely destroyed.
Stage 2
Over time, layers of sediment build up and press down on the buried remains.
Stage 3
Dissolved minerals, transported by ground-waters in the sediment, fill tiny spaces in the bones. The combination of pressure, chemical reactions and time eventually turns the sediments into rock and the bones into mineralised fossils.
Stage 4
The fossils remain within the rock until uncovered through erosion or excavation.
How I will present my information!!!
I will have a haiku deck going,real life fossils,poster of how they are created and the different types of fossils!!!
How it connects to my life and other peoples lives!!!
It connects to other peoples lives and my life because they look at fossils to learn about our ancestors,this is important because then we can learn about ourselves.
Fossils are evidence of ancient life forms or ancient habitats which have been preserved by natural processes. They can be the actual remains of a once living thing, such as bones or seeds, or even traces of past events such as dinosaur footprints, or the ripple marks on a prehistoric shore. Geologists can tell the age of a fossil through a variety of radiometric dating techniques. The breakdown of radioactive isotopes of certain elements, such as carbon, uranium and potassium takes place at a known rate, so the age of a rock or mineral containing these isotopes can be calculated.
Different types of fossils!
mold fossils
(a fossilized impression made in the substrate - a negative image of the organism)
cast fossils
(formed when a mold is filled in)
trace fossils
= ichnofossils (fossilized nests, gastroliths, burrows, footprints, etc.)
true form fossils
(fossils of the actual animal or animal part).
Back to my question!
What causes fossils to form??? Fossils are formed by force,pressure,minerals and lots of things happening to the fossil!
The fossil has to survive this proses for about 1,000,000 years and then archeologists find the fossil!
