Energy, Machines, and Motion
Vocabulary
battery - stored chemical energy. Made of a cathode, anode, and an electrolyte
cathode - the positive(+) end of a battery
anode - the negative(-) end of a battery
electrolyte - A chemical that
current -
voltage -
atom - The smallest whole unit of matter. Atoms are eclectically neutral.
nucleus - The center of an atom, made up of protons and neutrons.
proton - A positively (+) charged particle at the center of an atom.
neutron - A particle at the center of an atom that has no electrical charge.
electron: A negatively(-) charged particle on the outside of an atom.
conductor: material that can easily carry electricity
insulator: material that can not carry electricity
resistor: a material that can carry electricity, but now easily
force: a push or a pull
friction: a force that always opposes motion
mass: a measure of how much "stuff" is in an object. That "stuff" is atoms. Mass is usually measured in grams(g). An object's mass does not change even if you change it's location. You have the same mass (you're made of the same stuff) whether you're on Earth or floating out in space.
weight - a measure of gravity's pull on mass. Without the force of gravity on mass an object would have no weight. The reason you can check your weight by standing on a scale is because the force of gravity is pulling your mass down onto the scale. In space, far away from the Earth's gravity, if you stood on a scale, there would be no force to pull you down onto the scale and you would be "weightless."
cathode - the positive(+) end of a battery
anode - the negative(-) end of a battery
electrolyte - A chemical that
current -
voltage -
atom - The smallest whole unit of matter. Atoms are eclectically neutral.
nucleus - The center of an atom, made up of protons and neutrons.
proton - A positively (+) charged particle at the center of an atom.
neutron - A particle at the center of an atom that has no electrical charge.
electron: A negatively(-) charged particle on the outside of an atom.
conductor: material that can easily carry electricity
insulator: material that can not carry electricity
resistor: a material that can carry electricity, but now easily
force: a push or a pull
friction: a force that always opposes motion
mass: a measure of how much "stuff" is in an object. That "stuff" is atoms. Mass is usually measured in grams(g). An object's mass does not change even if you change it's location. You have the same mass (you're made of the same stuff) whether you're on Earth or floating out in space.
weight - a measure of gravity's pull on mass. Without the force of gravity on mass an object would have no weight. The reason you can check your weight by standing on a scale is because the force of gravity is pulling your mass down onto the scale. In space, far away from the Earth's gravity, if you stood on a scale, there would be no force to pull you down onto the scale and you would be "weightless."