2. Instructions  Take out a clean sheet of paper.  Write your heading in the top/right corner.  Answer these questions. 1) In your own words, explain the difference (contrast) between mass and weight. 2) What is the connection between gravity and weight? SPI 0807.12.4 Mass and Weight Bell Work Date Press the right arrow button to advance through this presentation Mass and Weight Are Not the Same!!!

3. Mass  What is it?  How is it measured?  How can I tell the difference between mass and weight? Mass…What is it? ---Mass is how much matter is in an object. ---In other words it is how much "stuff" is in an object ---Everything that is made of matter has mass. ---So anything that is a solid, liquid, gas, or plasma has mass. SPI 0807.12.4 Mass and Weight Notes Science

4. Mass…How is it measured? ---We measure mass with a triple-beam balance or an electric balance (there are various kinds) --We are measuring the amount of matter in the object SPI 0807.12.4 Mass and Weight Notes Science -unit of measure for mass: Grams -examples: milligrams (mg), grams (g), kilograms (kg)

5. Mass…How Can I Tell the Difference Between Mass & Weight? ---Mass does not change from planet to planet like weight does Example: -A full/unopened can of coke on Earth has a mass of 390g. -The same unopened can on Mars would have the same mass (390g) SPI 0807.12.4 Mass and Weight Notes Science Earth Mars Earth Mars 390g

6. Weight  What is it?  How is it measured?  How can I tell the difference between mass and weight? Weight…What is it? ---Weight is the measure of gravity's pull on an object. ---In other words it is how "heavy" something feels ---Everything that is made of matter has weight. ---So anything that is a solid, liquid, gas, or plasma has weight. SPI 0807.12.4 Mass and Weight Notes Science

7. Weight…How is it measured? ---We measure weight by using a scale (there are various kinds) ---We are actually measuring the force of gravity's pull SPI 0807.12.4 Mass and Weight Notes Science -unit of measure for weight: Newtons (not pounds!)

8. Weight…How Can I Tell the Differ. Between Mass & Weight? ---Weight changes from planet to planet, but mass does not Example: -A full/unopened can of coke on Earth weighs 3.61 Newtons. -The same unopened can on Mars would weigh 1.20 Newtons Why? Mar is smaller (less mass) than Earth & therefore has less gravity SPI 0807.12.4 Mass and Weight Notes Science Earth Mars Earth Mars 3.61 N 1.20 N

9. Mass and Weight Video ---Watch this song-video, and write down three things about mass and weight that the singer mentions. Link: "The Mass vs Weight Song" by Mr. Edmonds"The Mass vs Weight Song" by Mr. Edmonds SPI 0807.12.4 Mass and Weight Notes Science Mass and Weight Are Not the Same!!!