Mass Extinction
When many different species die out at once
What could cause mass extinction?
No rain for long periods of time
Why is it important to have more then one type of fossil in a layer when looking at relative dating?
It makes it easier to compare
Fossils of saber tooth tigers were found in both South America and Africa. What does that show?
The two continents were once connected
Paleontologist
Someone who studies fossils
Why are the soft parts of organisms not preserved in fossils?
Soft parts of organisms are eaten by predators or decompose
What type of climate did Wooly Mammoths live in?
Cold and Icy
What most likely occurred to allow the the fish to be occurred to be preserved so well?
The fish was buried in sediment.
Relative Age
Determining the relative order of past events
The shells and bodies of sea organisms
What does the fossil record refer to?
The fossils in the rock layers of the Earth
Index fossils should be found in large areas or small areas?
Large areas
Geologic time scale
A system of dating using terms like Precambrian, Paleozoic, Mesozoic and Cenozoic
Some coal produces a lot of heat and little pollution. What makes this kind of coal form?
High Pressure and Temp
What geologic time period did DINOSAURS live in?
Mesozoic
How could you use relative dating with newspapers?
By looking at where they are in the stack of newspapers
Continental Drift
The idea that the continents have moved across the Earth's surface over time.
If a shark fossil was found in Malverne what does that mean about Malvernes past?
Malverne used to be an ocean
Rocks that show woolly mammoths and saber tooth tigers were found in what period of geologic time?
Cenozoic
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