1. Measuring Mass Mass is the amount of matter in an objectMass is the amount of matter in an object Matter is some thing that has mass and takes up spaceMatter is some thing that has mass and takes up space

2. Units for measuring mass Mass is measured in grams and kilogramsMass is measured in grams and kilograms 1 paper clip =1 gram1 paper clip =1 gram 1000g = 1kg1000g = 1kg Average human adult is 75 kAverage human adult is 75 k =

3. Tools for measuring Mass The triple beam balanceThe triple beam balance

4. How to use a triple beam balance 1) Make sure that the balance scale is at zero.1) Make sure that the balance scale is at zero. 2) Place object on balance scale the larges and move the largest rider one notch at a time until the beam drops. Move the rider back one notch (make sure it lock in place)2) Place object on balance scale the larges and move the largest rider one notch at a time until the beam drops. Move the rider back one notch (make sure it lock in place) 3) Move the next largest rider until the beam drops. Back it up one notch.3) Move the next largest rider until the beam drops. Back it up one notch. 4) Move the smallest rider until the beam swings equally above and below the zero mark.4) Move the smallest rider until the beam swings equally above and below the zero mark. 5) Add up all the numbers to find the mass!5) Add up all the numbers to find the mass!

5. Calculate The Mass

6. Mass Vs Weight Mass does not depend on gravity The mass of an object always remains the same Weight depends on gravity Weight equals Mass X gravity The weight of an object changes if the pull of gravity changes

7. The astronaut travled to the moon what can you tell me about his mass and wieght on the moon compared to earth