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The first law of thermodynamics states that energy can't be created or destroyed. People can't create energy, so we get energy to do work from: food and fossil fuels.
Added 4/2/2021 12:19:33 PM
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Earth is the third planet from the Sun. This placement most affects Earth's unique mantle and atmospheric conditions.
Added 4/5/2021 1:52:14 PM
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Hydropower uses the energy of moving water.
Added 4/5/2021 1:53:59 PM
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The most-accepted theory for the origin of the universe is called the BIG BANG theory. This theory suggests that our universe explosively expanded into existence from a small, dense, hot singularity.
Added 4/5/2021 1:55:02 PM
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Today, we have seven major continents. However, most geologists don't think it was like this 200 million years ago. They think there was just one supercontinent.
Added 4/5/2021 1:55:53 PM
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The major factors that affected the earth's changing climates are: Meteor impacts, volcanic gases, and Milankovitch cycles.
Added 4/5/2021 1:57:23 PM
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Earth materials recycle and are balanced. Energy is balanced, but energy doesn't recycle. FALSE.
Added 4/5/2021 1:58:27 PM
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You find an extrusive igneous rock. It was formed from lava cooling on Earth's surface.
Added 4/5/2021 1:59:53 PM
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Just like our bodies, Earth's cycles tend to maintain a balance or equilibrium.
Added 4/5/2021 2:02:54 PM
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You can use radiometric dating on all minerals to tell their absolute age. FALSE.
Added 4/5/2021 2:03:19 PM
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The explosive force of a volcanic eruption depends on the type of magma in the magma chamber. The type of magma depends on its viscosity, temperature, and water vapor content.
Added 4/5/2021 2:03:44 PM
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Because cosmologists can't go out into space and test all of their theories, they must depend on the cosmological principle. This principle assumes that: any physical laws are the same for the entire universe.
Added 4/5/2021 2:04:28 PM
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Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. The decay rates of isotopes are constant and are expressed as Half-lives.
Added 4/5/2021 2:04:59 PM
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Both earthquakes and volcanoes are a result of seafloor spreading
Added 4/5/2021 2:05:45 PM
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Relative dating uses laws or principles of stratigraphy and paleontology. These laws of relative dating are:law of original horizontally, law of superposition, law of original lateral continuity,law of cross-cutting relationships.
Added 4/5/2021 2:07:56 PM
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The evidence supports the big bang theory of the origin of the universe: Cosmic microwave background radiation and primordial helium gas were found. The redshift of light from distant stars and galaxies indicates that the universe is still expanding.
Added 4/5/2021 2:08:45 PM
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In an ecosystem, energy from the Sun is transferred by way of: food chains or webs.
Added 4/5/2021 2:08:56 PM
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According to the geologic time scale, most types of animals first appear in Paleozoic era.
Added 4/5/2021 2:10:14 PM
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Our solar system is thought to have started with the birth of our Sun, which formed from a cloud of interstellar dust and gas. This cloud condensed and eventually collapsed from its own gravitational pull. The heat and pressure built up, forming a protostar. Eventually nuclear fusion began. Planets formed from remaining dust and gas orbiting the protostar. This explanation best describes The Nebular Theory.
Added 4/5/2021 2:11:14 PM
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The following answers describes Kepler's laws Planets orbit in elliptical patterns: Planets orbit in elliptical patterns; a planet's orbit covers equal areas in equal amounts of time; planets' orbits are shorter or longer depending on their distance from the Sun.
Added 4/5/2021 2:11:59 PM
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According to the Richter scale, a reading of 2.0 would cause minimal damage as opposed to a reading of 7.0.
Added 4/5/2021 2:12:51 PM
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Many mass extinctions of life occurred due to major changes in climate.
Added 4/5/2021 2:13:30 PM
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The mass extinction of the dinosaurs most likely spurred mammal diversification.
Added 4/5/2021 2:13:54 PM
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The two laws that best explain how the planets are able to stay in orbit about the Sun are Newton's laws of gravity and inertia.
Added 4/5/2021 2:14:52 PM
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Wood, manure, paper, trash, and food crops are sources of biomass.
Added 4/5/2021 2:15:21 PM
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Examine its layers, texture, and color can best help you classify a rock as sedimentary, metamorphic, or igneous.
Added 4/5/2021 2:15:49 PM
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The strength of an earthquake can be measured by Richter scale.
Added 4/5/2021 2:16:18 PM
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I am one of the most dynamic processes of Earth. I help recycle Earth's materials. I move Earth's crustal plates, creating many different geological surface features. I am also the cause of natural disasters, such as earthquakes and volcanoes. I am plate tectonics.
Added 4/5/2021 2:16:37 PM
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The major difference between Earth and the other planets in our solar system is that Earth has a biosphere.
Added 4/5/2021 2:17:07 PM
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The following tests can help identify a mineral: Scratch it against a streak plate to see the color of its residue; Hold light to it and examine its luster; Hit it with a hammer and see how it breaks; Examine its texture and see if it's rough, smooth, or glassy.
Added 4/5/2021 2:17:34 PM
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Convection is a process of heat transfer. In the earth, convection occurs because of heat and pressure from the core.Animation that best describes convection is: A
Added 4/5/2021 2:18:43 PM
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The Sun has the greatest gravitational pull, because it's the largest body in the solar system.
Added 4/5/2021 2:19:09 PM
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Photosynthetic bacteria was first responsible for changing the formerly poisonous atmosphere to an oxygen-rich atmosphere, as we have today.
Added 4/5/2021 2:20:15 PM
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