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

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225g

375g

625g

975g

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5kg

2.5kg

1.8kg

3.2kg

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250g

475g

650g

825g

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0.5kg

1.25kg

2.5kg

3.0kg

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150g

450g

750g

950g

1kg

2kg

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0.5kg

1.5kg

2.5kg

3kg

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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…