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Middle school is hard.

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
Atmosphere   The mixture of gases surrounding a planet.  
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Biosphere   All the living things on a planet.  
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Cause   An event or process that leads to a result or change.  
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Channel   A long, narrow groove that forms where water, lava, or other liquid flows.  
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Claim   A proposed answer to a question about the natural world.  
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Climate   General weather patterns over a long period of time.  
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Compare   To notice how two or more things are alike or different.  
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Crescent moon   A moon phase that looks like less than a half circle from Earth.  
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Effect   A result or change that happens because of an event or process.  
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El Nino   A climate pattern where water near the equator gets hotter than usual and affects the weather around the world; El NiƱo happens in the Pacific Ocean.  
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Energy   The ability to make things move or change.  
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Evidence   Information about the natural world that is used to support or go against (refute) a claim.  
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Exomoon   A moon outside of our solar system.  
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Exoplanet   A planet outside of our solar system.  
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Full Moon   A moon phase that looks like a full circle from Earth.  
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Geosphere   The solid part of a rocky planet.  
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Gibbous Moon   A moon phase that looks like more than a half circle from Earth.  
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Gyre   A giant pattern of moving water that spans whole oceans and moves water from place to place in a circle.  
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Habitable   Having the conditions necessary to support life.  
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Hydrosphere   All the liquid water and solid water (ice) on a planet.  
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Illuminate   To shine light on an object and make it visible.  
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Latitude   The distance of a place north or south of the Earth's equator.  
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Model   An object, diagram, or computer program that helps us understand how a system, or part of a system, works.  
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Moon   A rocky sphere that travels around a planet.  
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New Moon   A moon phase where the Moon is not visible from Earth.  
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Ocean current   Ocean water flowing in a continuous path.  
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Orbit   The nearly circular path a smaller object (like the Moon) travels around a larger object (like Earth).  
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Pattern   Something we observe to be similar over and over again.  
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Prevailing winds   Winds that move in one direction and are strong enough to push ocean currents.  
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Quarter Moon   A moon phase that looks like a half circle from Earth.  
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Reasoning   The process of making clear how your evidence supports your claim.  
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Scale   The relative size of things.  
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Scientific argument   A claim supported by evidence.  
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Solar System   The sun, the planets that orbit the sun, and other objects that orbit the sun.  
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System   A set of interacting parts forming a complex whole.  
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Sun   The star that is the main source of light at the center of our solar system.  
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Temperature   A measure of how hot or cold something is; the higher the temperature is, the more energy it has.  
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Terminator   The border between light and dark on the Moon.  
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Transfer   To move energy from one object to another or one place to another.  
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Year   The amount of time it takes for a planet to complete one orbit around a star or stars.  
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