Mod E U2 Les1-3 Review

The principle of uniformitarianism states that:

• All rocks on Earth are the same and always have been

• Processes happening currently on Earth are the same as those that have always ocurred

• All geologists must wear khaki pants on Tuesdays

• Volcanoes and earthquakes will erupt at the same time every year

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Fossils are most commonly found in sedimentary rock. What is a fossil?

• The trace remains or an imprint of a once living organism

• The fossil fuels produced from dead plants and animals

• A rock made of dead plant and animal parts

• The waste products of once living organisms

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An ant preserved in solidified tree sap would be called a(n):

• Petrified fossil

• Asphalt fossil

• Amber fossil

• Ice fossil

Fossils that forms when the imprint of an organism is made between layers of sediments are:

• sedimentary rock fossils

• asphalt fossils

• petrified fossils

• trace fossils

Fossilized animal tracks, burrows, eggs, and dung are examples of:

• petrified fossils

• frozen fossils

• trace fossils

• amber fossils

The weather conditions in an area over a long period of time make up an area's:

• fossil

• temperature

• reputation

• climate

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A geologist in the field might look at what layer a fossil was found in or use index fossils to estimate the fossil's age. This method is called:

• absolute dating

• radiometric dating

• relative dating

• isometric dating

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Radiometric dating, analyzing how much of specific atoms are left in a rock, is a type of:

• relative dating

• absolute dating

• approximate dating

• technical dating

According to the law of superposition, which fossils are the oldest?

• Those found in the deepest rock layers

• Fossils found closest to the surface

• Fossils found scattered throughout the mesozoic layer

• Position alone is not enough to age a fossil

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A break in the geologic record from rocks being eroded or periods of no deposition is known as:

• an uncomformity

• an absence

• a chiasm

• an ultrarosional space

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