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MASS AND WEIGHT
What is mass?
Mass is: A measurement of how much
matter is in an object.
the amount of matter an object has.
How to Measure Mass?
Mass is usually measured
in kilograms which is
abbreviated as kg.
Tools for Measuring Mass
The Triple Beam Balance is the tool we use to measure mass.
Weight
It is the amount of mass of an object, it is dependent upon
gravity.
Some Tools for Measuring weight
spring balance
electronic scale
beam balance
bathroom scale
Use this scale to show…
1.5 kg
2.5kg
3.5kg
2kg
Use this scale to show…
225g
375g
625g
975g
Use this scale to show…
5kg
2.5kg
1.8kg
3.2kg
Use this scale to show…
250g
475g
650g
825g
Use this scale to show…
0.5kg
1.25kg
2.5kg
3.0kg
Use this scale to show…
150g
450g
750g
950g
1kg
2kg
Use this scale to show…
0.5kg
1.5kg
2.5kg
3kg
Use this scale to show…
200g
400g
750g
950g
COMPARE AND CONTRAST MASS vs. WEIGHT
Always remains constant Depends on gravity
Does not depend on gravity weight= mass x gravity
weight of an object changes if the
gravity changes
Did you know… 1 pound = 453,59 grams 1 ounce = 28.34 grams 1 ounce = 0.0625 pounds 1 ounce = 28 ,349.52 milligrams
Basic unit: GRAM
Tonnes (1000kg)
Kilograms Hectograms Dekagrams Grams Decigrams Centigrams Milligrams
Exercise 1:Which one is larger?
1 Pound or 100 Grams 1 Kilogram or 1 Pound 1 Ounce or 1000 Milligrams 1 kilogram or 1500 grams 1200 milligrams or 1 gram 12 milligrams or 12 kilograms 4 kilograms or 4500 grams
Exercise s:Convert the following units
Solving problems: Choose the correct answer:
Some problems…
