1. 829 Distinguish between mass and weight using appropriate measuring tools and units.

2. Key concepts/skills: Level 1: Define key vocabulary. Level 2: Know the difference between mass and weight. Level 3: Recognize the difference between mass and weight, kilograms and Newtons, and the tools used to measure mass and weight, given specific situations.

3. Key vocabulary Mass Weight Pan balance Kilogram scales Kilograms Grams Newtons

4. I.M ass A.T he amount of matter in an object 1.M ass is always constant for an object no matter where in the universe the object is 2.M ass is measured on a triple beam balance or a kg scale 3.M ass is expressed in kilograms (2.2 lbs) for large objects and grams for small objects 4.I have the same mass anywhere in the room, on a mountain, in a cave, in a plane, on another planet

5. Distinguish between mass and weight using appropriate measuring tools and units. II. Weight A. A measure of gravitational force on the object. 1. Weight varies depending on where the object is in relationship to the earth 2. Weight is measured using a spring scale 3. Weight is a force and all forces are measured in Newtons (N)

6. 4. If we know an objects mass on earth we can calculate its weight because 1kg (mass) = 10 Newtons (weight). Thus we multiply the mass by 10 5. My weight changes depending on where I am in the universe because weight is a measure of gravity on my body and gravity changes

7. My weight in pounds 160 1 kg = 2.2 pounds divided by 2.2 My Mass in kilograms 72.7 1 kg = 10 Newtons x 10 My weight in Newtons 727

8. III. Gravity A. The force of attraction between all objects in the universe 1. Gravity changes between object as the mass of the objects and the distance between them changes 2. Since gravity changes with distance and weight is a measure of gravity, weight changes with changes in location