Stack #120625
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Heliocentric Theory | the theory first proposed by Copernicus, stating that Earth and other planets revolve around the sun
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| Gravity | a force of attraction between any two objects, it governs the movements of the planets
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| Stars | formed out of clouds of gases and dust in space known as nebula, produce energy through nuclear fusion
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| Big Bang Theory | the universe began in an explosion between 13-15 billion years ago, based upon stars moving away from one another
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| Continental Crust | outermost layer of the Earth
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| Oceanic Crust | lies beneath the ocean
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| Mantle | made up of hot, dense rock, as one moves deeper, the temperature and pressure rise
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| Outer Core of Mantle | made up of molten nickel and iron
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| Inner Core of Mantle | solid, mainly made of iron
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| Lithosphere | made up of crust and top layer of mantle, divided into shifting tectonic plates
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| Divergent Plate Boundary | two tectonic plates spread apart, magma comes through the gap
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| Convergent Plate Boundary | two tectonic plates come together
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| Subduction Zone | oceanic crust dives under lighter continental crust
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| Transform Plate Boundary | two plates slide by horizontally
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| Hydrosphere | made up of all water on Earth's surface, accounts for 70% of Earth's surface
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| Water Cycle | Circulates through evaporation, condensation, precipitation, and run-off
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| Atmosphere | an envelope of gases around the Earth, mainly made up of nitrogen and oxygen
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| Greenhouse Effect | burning fossil fuel adds carbon dioxide to the atmosphere, heating up the Earth
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| Atom | smallest unit of matter unique to a particular element
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| Proton | positively charged, located within the nucleus of an atom
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| Neutron | neutral in charge, the same mass as the proton, located within the nucleus of an atom
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| Electron | negatively charged, attracted to nucleus' positive charge, move around the nucleus at high speeds in different energy levels, same number as protons
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| Atomic Symbol | one or two letters to identify elements
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| Atomic Number | reflects the number of protons within an atom
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| Atomic Mass | the sum of protons and neutrons within an atom
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| Electron Energy Levels | each can hold on a specific number of electrons, an atom is most stable when it fills its outermost energy level
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| Ionic Bonds | when a transfer of electrons occurs between two or more atoms, negatively charged ions are attracted to positively charged ions
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| Covalent Bonds | some atoms complete their outer levels by sharing electrons
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| Chemical Reactions | combinations of substances that result in one or more new substances with new physical and chemical properties
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| Balancing Equations | there should be the same number of atoms on each side of a reaction
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| Conservation of Mass | matter cannot be created or destroyed in a chemical reaction
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Created by:
jgrimmett
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