Mass - Applying Mass

In previous entry, you have learned about Mass. Do you know we have units to measure Mass?

The basic unit for Mass is gram (g):

1 kilogram (kg) = 1000 gram (g)


There are many equipments to measure Mass. Some of these equipments are:

(Weight Balance)

(Triple Beam Balance)

 (Mechanical Scale)






Now, if a book is weighted at 50 grams while a brick is weighted at 200 grams. How many books are needed so that the weight is the same as a brick?

Solution:
1 Brick = 200 g
1 book = 50 g

50 g X ? = 200 g

50 g + 50 g + 50 g + 50 g = 200 g

So, it becomes:

50 g X 4 = 200 g

Answer:
4 books are needed to weight the same as a brick.


That's all for today. Thank you.

Mass - Introduction

Today we will learn about a new topic - Mass.

Mass is the amount of matter in an object. The more matter in an object, the heavier the object will be. The less matter in an object, the lighter the object will be.

For example:

Try to move a wooden table. After that try to move a wooden chair. Which one is easier to move?

It should be the wooden chair because the wooden table has more mass than a wooden chair.


Another example:

Try to lift a brick. After that, try to lift a small bag of sand. Which one is easier to lift?

It should be the small bag of sand because the small bag of sand is lighter than a brick.


Now you get the idea of mass and how to compare them. Before we end our lesson for today, look at the picture below. Which one has more mass? The stones or the water?

Answer: The Stones because in the picture shown, there Stones are heavier than the water. Hence, when Stones are heavier than water, this means stones have more mass than water.

That is all for today. Thank you.