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Fossils and Relative Dating
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Show answers Preview. Show Answers. See Preview. Multiple Choice. Sea animals live in the desert. The desert was once underwater. All deserts were once underwater. All of the above are true. What is a Fossil?
40 questions
Any dead organism. The preserved remains or traces of an organism. A perfect copy of a rock. None of the above. How do MOST fossils form? Footprints and trails are examples of. Trace Fossils. Index Fossils. Most fossils form when the hard parts of an organism are buried quickly and over time become part of.
Igneous Rock. Metamorphic Rock. Sedimentary Rock. Which of the following is an example of mineral replacement? La Brea Tar Pits. A Frozen Mammoth. Hardened Tree Sap. Petrified Wood. David wants to preserve the remains of a dead caterpillar. Under what conditions would he get the best results? A fossil that forms when a hollowed out impression in a rock that is the same shape as a shell fills with sediment and then hardens.
Which of the following is NOT a characteristic of an index fossil?
What type of fossil fills a mold, and is a model of the actual organism? Which statement is not true? Older rock layers will be found under younger rock layers. Rock layers are always younger than the igneous intrusions that cut through them. Nonconformities are sedimentary rocks that lie on top of metamorphic or igneous rock layers.
Faults, intrusions, folding, and tilting are examples of disturbances. I found a layer of sandstone with a million year old trilobite in it. Laying below is a layer of worksheet rock. Which of the following must be fossils The sandstone is greater than million years old. The metamorphic rock must be at least million years old. The metamorphic rock was deposited after the trilobite was alive. When scientists use logic to determine the age of one fossil compared to another, they use this type of dating.
What law dictates the answer to question 19? The law of horizontality. The law of superposition. The law of included fragments. The law of uniformatism. During which Era did fossils earliest humans appear? During which Era appeared the find someone dating site dinosaurs? According to the law of superposition, the oldest fossils are found.
At the top of the rock layers. Near the bottom of the rock layers. In the middle of the rock layers. Somewhat near the surface. Which type of dating method can be used on rock layers by applying learn more here Law of Superposition? What happens during radioactive decay? A stable isotope of one element changes into an unstable isotope of a different element.
A stable isotope of one element changes into an unstable isotope of the same element. An unstable isotope of one element changes into a stable isotope of a different and. An unstable isotope of one element changes into a stable isotope of the same element. How many of the original atoms dating a decaying isotope remain unchanged after three half-lives?
The just click for source of time required for half of the radioactive atoms in a sample to decay is its Scientists use radioactive decay to measure What does finding marine shells in the woods of Pennsylvania tell scientists?
Marine species once lived on land. The area of Pennsylvania was once underwater. The fossils had most likely been transported from a marine environment to Pennsylvania. Marine organisms have adapted to survive on land. What makes using radioactive material useful for dating rock layers? Which best describes a fossil that helps determine the dating age of a rock layer? Which is the most accurate method scientists can use to estimate Earth's age?