Skills Lab Site 1 and 2. Page 322

Site 1.

1. Fossils clues of layer A and B tell me that they existed because the more they are they were a lot of kind of these animals. The environment changed in layer D because the animals in layer A and B died and their was a new generation so this is why they are new animals in layer D.
2. Layer A is the oldest because as I see in the picture that the recent dead animals (layer G) are just down the earth's surface.
3.  Layer G is formed recently because the layer G is just down the Earth above the other layers.
4. They're was no fossil layers in layer C and E because their was extrusion.
5. In layer F the fossils found are Dinosaurs, plants, and birds.

Site 2

6. Layer B may have formed at the same time as layer W.
7. Clue "V" shows an unconformity in the horizontal rock layers. Rock layers W,X, and Y are missing. Their was an intrusion.
8.  Intrusion "V" was older because it is really down and big.
9. So at the earliest layer, they are animals that are recent compared to the other layers. Layer Z had Mammal, bird's and plants which are found know in the world.  Layer "Y" was little more older because they're was the same thing but with dinosaurs. Layer "X" has an extrusion (lava). Layer "W" has animals that were found really long time ago that are not found anymore but some yes such as shells, ammonite, and fish. Then they're was an intrusion in layer "Y" which was hard for paleontologists to find other fossils

The Ten Fossil Questions

1) What are the five types of fossils ?
Mold and casts, Petrified fossils, carbon films, trace fossils and preserved remains.
2) What is a paleontologist?
A paleontologist is a scientist who study fossils.
3) How fossil forms ?
A fossil may form when sediment quickly covers an animal's body.
4) What fossil record provides ?
The fossil record provides evidence to support the theory of evolution. The fossil record also provides evidence about the history of life and past environments on Earth. The fossil, record also shows that different groups of organisms have changed over time.
5) What means "extinct" and which animal got "extincted" ?
Extinct is when a type of organism no longer exists and will never live on earth.  Dinosaurs are extinct.
6) What are the four steps of a fossil forming ?
First an animal dies and sinks into shallow water, then sediment covers the animal, after that, the sediment becomes rock, preserving parts of the animal at last weathering and erosion eventually expose the fossil at the surface.
7) Where does fossils come from?
Fossils come from ancient organisms.
8) What does paleontologists do?
Paleontologists classify organisms. They group similar organisms together. They arrange organisms in the order in which they lived, from earliest to latest.
9) Give five example of old animals.
Coryphodon, Phenacodus, Uintatherium, Hyracotherium, and frigate birds.
10) How does Carbon films form?
Carbon films form when sediment buries an organism, some of the materials that make up the organism evaporate, or become gases. These gases escape from the sediment, leaving carbon behind. Eventually only a thin film carbon remains. This process can preserve the delicate parts of plant leaves and insects.

310-316 Important words + meanings.

Fossils  -  Are preserved remains or traces of living things.
Sedimentary Rock- Is the type of rock that is made of hardened sediment.
A mold- Is a hallow area in sediment in the shape of an organism or part of an organism.
A cast- Is a sold copy of its mold.
Petrified fossils- Are fossils in which minerals replace all or part of an organism.
Carbon Film- Is another type of fossil
Trace Fossils- Provide evidence of the activities of ancient organisms.
Paleontologists- Scientists who study fossils
A scientific theory- Is a well-tested concept that explains a wide range of observations.
Evolution- Is the gradual change in living things over long periods of time.
Extinct- Is a type of organism, if it no longer exists and will never again live on earth.

This is a place where weathering occured over a long time even made its way through the road.

This is a place where there is not a lot of chance that erosion can occur because plants are holding the soil together.

This is a piece of land where we are almost sure that an erosion can happen there because there are no plants that hold the soil together.

This is a small example of a mud flow that occurred when we poured water on this small muddy hill.

This is a type of weathering that occurred after many days of rain.