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Understanding Mass and Volume in Physics

Learn about mass and volume in physics, including the difference between mass and weight, measuring mass using different units, and calculating volume for solids and liquids. Explore how mass remains constant, while volume can change under specific conditions.

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Understanding Mass and Volume in Physics

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  1. Mass Notes

  2. Matter • The amount of stuff in the material.

  3. Mass • the amount of matter in the object • Mass never varies or changes. It remains constant

  4. Example • If you travel to the moon, the amount of matter in your body (your mass) does not change.

  5. Weight • The measure of the force of gravity on you • Mass is not the same as weight

  6. Mass vs. Weight • Unlike weight, mass does not change with location, even when the force of gravity on an object changes.

  7. On the moon you would only weigh one-sixth of your weight on Earth • Weight on moon = .16 x your weight on Earth • Your mass would remain the same

  8. Units of Mass • mg – milligram • g – gram • kg - kilogram

  9. Measuring Mass • A triple beam balance is used to measure mass • Electronic balance

  10. Volume • The amount of space an object occupies

  11. Volume is a property of an object • Solids, liquids and gases all have volume

  12. Volume – unlike mass can change under certain conditions

  13. Liquid Volume • L – litermL – milliliter • Volume of solid objects: cm3 – cubic centimeter

  14. Calculating Volume • Regular Solid Object: • Volume = length x width x height • V= l x w x h • Units: cm x cm x cm = cm3

  15. Liquid Volume • Tool = graduated cylinder

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