the remains or traces of an organism that lived long ago
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What does it mean when something is extinct?
A plant or animal that is extinct could once be found living on Earth but is now gone.
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Which types of fossils is a record of a living thing's activity?
footprints
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What can you conclude from the fact that so many fossils involve shells, skeletons, and teeth?
These parts decay slower than other body parts.
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Based on the image, what type of environment did this organism live in? (on land, in an ocean, a lake or a river)
This organism lived on land.
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Fossils can provide evidence of how life has changed over time, how Earth's surface has changed, and clues about what past environments were like. True or False? Explain or give one example.
True
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What are 3 clues that fossils give about extinct animals?
How they once looked, ate, and moved.
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How can we figure out the size of an object?
compare it to another object or use a common standard
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How the giant ground sloth fossil compares in size to the mini van?
The giant ground sloth is slightly bigger than the mini van.
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Describe some types of fossils, and explain what fossils can tell you about once-living things?
Fossils preserve parts of past organisms.Many fossils are found in rock or amber.They can tell us what extinct organisms were like,compared to some alive today.
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Which kind of fossil do you think a scientist would prefer to find-a trace fossil of a T-rex's footprints or a full T-rex skeleton? Explain.
A skeleton would give scientists a fuller picture of what the animal looked like and clues about how it lived. Footprints can suggest size, behavior, and speed.
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How would you figure out whether the organism represented by a fossil is still around today?
Compare the fossil to organisms that are on Earth today. If no matches can be found, the species is likely extinct.
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How does knowing the size of the bus help you estimate the size of the extinct animals in the drawing?
Knowing how long a bus is makes the estimates of the organisms' sizes more accurate.