Fantastic Fossils
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| show | Different - uniformitarianism is GRADUAL geologic change while catastrophism is SUDDEN geologic change Similar - both are theories about Earth’s geologic change
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| show | Rocks, fossils, and rock layers that lie on the bottom are the oldest while the youngest are on the top if the layers are undisturbed
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| How is the law of superposition related to relative dating? | show 🗑
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| Is it easier to find the relative age of a fossil or the absolute age? Explain. | show 🗑
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| show | Petrified Fossil
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| What type of fossil would a footprint be considered? | show 🗑
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| What is the difference between a mold and a cast? | show 🗑
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| Give an example of how the fossil record shows geologic change. | show 🗑
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| In order for the law of superposition and original horizontality to apply what must be true about the rock layers? | show 🗑
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| What era do we currently live in? | show 🗑
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| show | Eon, Era, Period, Epoch
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| show | When an organism was alive for only a short period of time, but was widely distributed
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| show | They are arranged in horizontal layers
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| We know that over 500 million years ago most organisms lived in the oceans, but today we have ocean organisms and land organisms. What does this tell us about how life forms have changed over time? | show 🗑
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| show | The preserved remains or traces of living things
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| show | Sedimentary (most often)
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| show | These provide clues about the activities of ancient organisms such as their living habits and eating habits
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| How does geologic change happen according to Uniformitarianism? | show 🗑
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| show | Eon, Era, Period, Epoch
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| What does the Geologic Time Scale show us? | show 🗑
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| show | It means many different geologic periods are represented.
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| show | There are no layers of rock that include both dinosaur fossils and cow fossils.
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| show | These processes help to reshape the Earth's surface over time.
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| How have fossils changed overtime? | show 🗑
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| show | Because these fossils were widely distributed; lived only a short time and tell the relative age of the rock in which they occur, they are used to help determine the relative age of rocks and rock layers.
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| show | It tells us life on Earth has changed over time causing organisms to be more complex and shows us how the environment changed
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| show | Cenozoic
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| If you found a fresh water fossil in the desert what might you infer about that area long ago? | show 🗑
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| show | The oldest rocks and fossils are on the bottom while the youngest are on the top.
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| If a paleontologist and a geologist were trying to figure out if rock layers were undisturbed why could they use original horizontality to help them? | show 🗑
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| What happens to create a petrified fossil? | show 🗑
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| show | A mold will be concave and while a cast is convex. The mold will be an impression while the cast is a copy. The mold is hollow!
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| What are trilobites used for? | show 🗑
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| What do paleontologists actually study? | show 🗑
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| How are rock layers arranged in a geologic column(Sample of Earth)? | show 🗑
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