Newton’s First Law of Motion - Law: "An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force (inertia).",A soccer ball stays still until kicked; it keeps rolling until friction or a player stops it., Newton’s Second Law of Motion - Law, "Force equals mass times acceleration (F = ma). The more mass or acceleration, the more force needed.",Pushing a heavy cart requires more force than pushing a light one., Newton’s Third Law of Motion - Law, "For every action, there is an equal and opposite reaction.","When you jump off a diving board, you push down, and the board pushes you up.", Universal Gravitation - Law,Every object attracts every other object with a force that depends on their masses and distance between them.,"The Earth pulls you downward, keeping you from floating away.", Conservation of Energy - Law, "Energy cannot be created or destroyed, only transferred or transformed.","When you throw a ball up, its kinetic energy becomes potential energy at the highest point.", Conservation of Mass - Law: Matter cannot be created or destroyed in a chemical reaction; the mass of reactants equals the mass of products.,"When you burn wood, the total mass of ash, gases, and smoke equals the original wood’s mass.", Plate Tectonics - Theory,"Earth’s crust is divided into plates Sheffield plates that move, causing earthquakes, volcanoes, and mountains.",The movement of plates explains why California has earthquakes., Cell Theory - Theory,"All living things are made of cells, cells are the basic unit of life, and new cells come from existing cells.","Plants and animals are made of tiny units called cells, seen under a microscope.", Atomic Theory - Theory,"All matter is made of tiny particles called atoms, which combine to form molecules.",Water is made of hydrogen and oxygen atoms bonded together., Evolution by Natural Selection - Theory, "Species change over time through natural selection, where traits that help survival are passed on to offspring.","Giraffes with longer necks survived better, passing that trait to future generations.",

Scientific Theories and Laws

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