mass v.s wieght

mass part 1

• Mass is the same and does NOT change.
• Even if you are in space mass stays the same.
• Mass is measured with balance. 
• The item you are trying to find the mass of goes in the red container.

mass part 2

• Mass is how much "stuff" an object has.
• Example:
• if you find the mass of a rock but break that rock the mass changes.

weight part 1

• Weight can change , when you grow up your weight changes.
• Weight depends on how much gravity is there ,  in space your weightless. 
• If the pull increases the weight does too.
• If the pull decreases the weight does too.

weight part 2

• Example:
• When you are on earth you have a weight ,
• but in space you don't have any weight.

measured in mass

• Mass is measured in grams or kilograms .
• You use a balance to measure mass.

how to measure weight

• Weight is measured in newtons or pounds.
• to measure weight you use a scale.