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11 Cards in this Set
- Front
- Back
the actual shape of the Earth's orbit around the Sun is best described as
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a perfect circle
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If viewed from the Earth over a period of several years, the apparent diameter of Mars will
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vary in a cyclic manner
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During which epoch could early humans have existed
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Pliocene
2.8 mya?? |
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Which rock is likely to be the oldest?
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the trilobite fossils indicate the greatest age
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Properties of basalt
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fine-grained and mafic
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a foliated metamorphic rock formed from pelitic sediments in which the mineral grains have grown large enough to see
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schist
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conditions most likely to develop over a land area adjacent to the ocean on a hot, sunny afternoon
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high temp w/ on-shore breeze
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in which type of climate would the rate of chemical weathering be greatest
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warm and moist
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transported sediments are suaully deposited at locations in which
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a decrese in the speed of the agent of erosion occurs
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A layer of shale is located below the Devonian limesotne and above Cambrian sandstone. Overturning has not occurred. During which period was the shale most likely deposited?
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Silurian
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What radioactive element is best suited for determining the age of wooden tools used by prehisotric humans during eh last ice age?
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carbon 14
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