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5th gr fossils&eras2
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Question | Answer |
---|---|
What are the remains or prints of a dead organism that is usually found in rock | fossils |
what is a fossil that shows an animal's activity, like a footprint? | trace fossils |
What is rock that forms from the deposit of sediment, usually found in layers, called? | sedimentary rock |
Where would you find older rock layers -- at the top or the bottom? | at the bottom |
in what era are fossils hard to find? | precambrian era |
Which era is known as "the age of the dinosaurs"? | mesozoic era |
when did humans appear? | cenozoic era |
In what era did the formation of the earth begin? | precambrian era |
what era did trilobites live in? | paleozoic era |
what era are we currently in? | cenozoic era |
How many eras are in earth's history? | 4 |
what are tiny bits of matter that settle in water? | sediment |