Unit 3 Geology study guide

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What is biomass?

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Biomass is organic material that comes from plants and animals. It can be used as a renewable energy source to help conserve fossil fuels.

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What are fossil fuels?

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Fossil fuels are energy sources formed from the remains of ancient plants and animals, including coal, oil, and natural gas.

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Why are fossil fuels considered non-renewable resources?

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Fossil fuels can only be replaced over millions of years, making them non-renewable.

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What is plate tectonics?

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Plate tectonics is the scientific theory that explains the movement of the Earth's lithosphere, which is divided into tectonic plates.

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What is the hardness scale for minerals?

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The hardness scale, known as Mohs scale, ranks minerals from 1 (softest) to 10 (hardest). Diamonds have a hardness of 10.

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What is the Earth's crust?

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The Earth's crust is the outermost layer of the Earth, composed of solid rock and minerals.

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What is the mantle?

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The mantle is the layer of the Earth located between the crust and the core, composed of semi-solid rock that flows slowly.

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What is the significance of the fossil record?

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The fossil record provides evidence of past life on Earth and helps scientists understand the history of life and evolution.

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What are analogous structures?

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Analogous structures are body parts in different species that have similar functions but do not share a common evolutionary origin.

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What is geographic isolation?

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Geographic isolation occurs when a population of organisms is separated by physical barriers, leading to the development of new species.