1
00:00:01,710 --> 00:00:07,650
Hi kids! Today we are going to do an experiment to revise the concept of mass.

2
00:00:07,969 --> 00:00:10,429
Do you remember what mass means?

3
00:00:11,230 --> 00:00:16,910
You're right! The mass is the amount of matter an object has.

4
00:00:17,329 --> 00:00:22,570
And we know because of its weight, el peso.

5
00:00:23,010 --> 00:00:26,350
We are going to do an experiment to check this.

6
00:00:27,070 --> 00:00:29,589
For this experiment you'll need the following.

7
00:00:29,589 --> 00:00:44,640
okay you'll need a hanger okay this is a hanger you'll need two plastic recipients and two paper

8
00:00:44,640 --> 00:01:02,340
clips like this okay then we are going to put this on a hanger door and we are going to choose two

9
00:01:02,340 --> 00:01:14,640
objects to compare. I am going to choose a battery and a marble. Let me see, here I've

10
00:01:14,640 --> 00:01:29,090
got a battery and a marble. So I am going to put the marble here, okay, it

11
00:01:29,090 --> 00:01:37,989
doesn't have much matter and I am going to put the battery on the other side.

12
00:01:37,989 --> 00:01:54,219
What happened? The battery has more mass than the marble. Now I am going to choose

13
00:01:54,219 --> 00:02:05,319
two different objects I am going to choose a rubber ball and two magnets

14
00:02:05,319 --> 00:02:17,669
here is the ball and here the two magnets okay these are magnets so I have

15
00:02:17,669 --> 00:02:29,349
two magnets and a rubber ball I am going to put the ball in the box okay this has

16
00:02:29,349 --> 00:02:37,810
move to the right. Now I am going to put the two magnets on the other side. Let's

17
00:02:37,810 --> 00:02:49,080
see what happened. Okay, the ball has more mass than the two magnets. I am

18
00:02:49,080 --> 00:02:54,780
going to take two more magnets. So we have one green ball here and two

19
00:02:54,780 --> 00:03:04,460
magnets over there, but I am going to pick two more magnets. Now I'm going to

20
00:03:04,460 --> 00:03:13,159
put the two magnets with the pink ones and see what happened to the hanger okay

21
00:03:13,159 --> 00:03:22,379
now the balance is more or less the same okay so now four magnets have more or

22
00:03:22,379 --> 00:03:30,379
less the same matter than the ball I am going to take two more magnets and see

23
00:03:30,379 --> 00:03:42,120
what happened. Here I've got two magnets more and I am going to put it with the pink and the blue

24
00:03:42,120 --> 00:03:56,860
ones. What happened now? You're right. Six magnets have more mass than the green rubber ball. Hope

25
00:03:56,860 --> 00:04:02,400
you have learned a lot. Now I want to see your experiments. Bye!