Science
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each of the black spaces below before clicking
on it to display the answer.
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| What are the 4 layers of the earth | Crust mantle outer core inner core
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| What are the characteristics of the earths layers | Crust: solid rock Mantle: hot rock Outer core: liquid Inner core: Solid
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| What are the 2 types of evidence that geologists use to learn about earths interior? Give examples of the evidence | Indirect evidence not in contact with object Direct touching, has contact with object
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| What types of rocks are found in different parts of the crust | Granite light color and Basalt B= black
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| Compare and contrast the lithosphere and asthenosphere | Lithosphere the uppermost part of the mantle is very similar to the crust and the crust together form a rigid layer call the lithosphere
Asthenosphere below the lithosphere your vehicle encounters materials that is hotter and under increasing pressure
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| What are the types of heat transfer | Radiation, Convection, Conduction
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| Give an example of the 3 heat transfer | Radiation the sun
Convection cooking something in an oven or boiling something in water
Conduction touching direct contact a spoon in a pot of soup heats up by conduction
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| What causes convection currents | Heating and cooling of the fluid changes in the fluids density and the force of gravity combine to set convection currents in motion
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| How does density affect a convection cell | Differences of temperature and density within a fluid
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| What causes convection currents in earths mantle | Heat from the core and the mantle itself causes convection currents in the mantle
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| What source of heat drives convection currents in the mantle | Convection
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| Who is Alfred Wegener and what was his hypothesis | Adored Wegener is a young German scientist and his hypothesis was that all the continents were once joined together in a single landmass and have drifted apart
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| What was the evidence that supported Wegeners hypothesis | Fossils climate change land features
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| Why was Alfred Wegeners hypothesis rejected | He didn't have and explanation for the forces that pushes or pulls the continents
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| What is continental drift | The hypothesis that the continents slowly move across earths surface
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| What is Pangea | The name of the single landmass that broke apart 200 million years ago and gave rise to today's continents
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| What was the evidence that supported Wegeners hypothesis | Fossils climate change land features
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| Why was Alfred Wegeners hypothesis rejected | He didn't have and explanation for the forces that pushes or pulls the continents
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| What is continental drift | The hypothesis that the continents slowly move across earths surface
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| What is Pangea | The name of the single landmass that broke apart 200 million years ago and gave rise to today's continents
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| What is a fossil | A trace of an organism that has been preserved in rock
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| What was the evidence that supported Wegeners hypothesis | Fossils climate change land features
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| Why was Alfred Wegeners hypothesis rejected | He didn't have and explanation for the forces that pushes or pulls the continents
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| What is continental drift | The hypothesis that the continents slowly move across earths surface
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| What is Pangea | The name of the single landmass that broke apart 200 million years ago and gave rise to today's continents
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| What is a fossil | A trace of an organism that has been preserved in rock
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| What is sea floor spreading | The sea floor spreads along both sides of the mid ocean ridge as new crust added as a result the cone floor move like conveyor belt carrying the continents along with them
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| What is evidence of sea floor spreading | Molten material magnetic stripes and drilling samples
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| What occurs at deep ocean trenches | Parts of the ocean floor sinks back into the mantle at deep ocean trenches
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| How is convection currents related to subduction | The heat makes it sink
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| Why are ocean floors expanding or shrinking | Subduction, the ocean floor is renewed about every 200million years the vast Pacific Ocean covers almost one third of the planet and yet it is shrinking the process of subduction can change the size and shape of it
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| What is the theory of plate tectonics | The theory of plate tectonics states that pieces of earths lithosphere in slow constant driven by convection currents in the mantle it explains the formation movement and subduction of earths plates
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| What are the 3 boundaries | Divergent convergent and transform
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