1 00:00:00,940 --> 00:00:07,019 Hello class, it's your teacher Shaila. Today we are going to continue with our unit 2 00:00:07,820 --> 00:00:16,699 about matter and materials. Please turn to page 84 in your natural sciences book 3 00:00:17,339 --> 00:00:25,179 and let's get started. Today we'll be learning about mass, volume, and mixtures. 4 00:00:25,179 --> 00:00:36,640 Objects and materials have mass and volume. Mass is the amount of matter an object has and volume 5 00:00:36,640 --> 00:00:47,140 is how much space it occupies. An object can be small but very heavy. A different object can be 6 00:00:47,140 --> 00:00:56,880 big but very light. Let's start with exercise one. Look at the first picture. 7 00:00:56,880 --> 00:01:08,799 Here we have a red box and a blue box on a scale. A scale is used to measure the 8 00:01:08,799 --> 00:01:17,060 difference in mass between two objects. Here we can see that the red box has 9 00:01:17,060 --> 00:01:28,000 more mass than the blue box. That is why on the scale it is weighing down more toward 10 00:01:28,000 --> 00:01:38,099 the ground because the red box is heavier. So please write mass next to this picture. 11 00:01:38,099 --> 00:01:43,099 Now in this picture, we see here that the blue box 12 00:01:43,920 --> 00:01:48,500 has more volume than the red box. 13 00:01:48,500 --> 00:01:53,500 We can see that because the red box is much bigger 14 00:01:53,500 --> 00:01:58,420 and it takes up more space in the picture than the red box. 15 00:01:58,420 --> 00:02:03,400 So please write volume next to the picture. 16 00:02:03,400 --> 00:02:08,000 So here we have mass and here volume. 17 00:02:09,319 --> 00:02:13,020 Now we'll continue with exercise two. 18 00:02:13,020 --> 00:02:17,099 Which one has the largest mass? 19 00:02:17,099 --> 00:02:17,960 Circle. 20 00:02:17,960 --> 00:02:22,199 So please tell me which you think has the largest mass, 21 00:02:22,199 --> 00:02:25,960 which is the heaviest object. 22 00:02:25,960 --> 00:02:30,159 Here we have a whale, a butterfly, 23 00:02:30,159 --> 00:02:35,159 a feather, a bolt, an apple, and a balloon. 24 00:02:38,219 --> 00:02:41,960 Which is the largest mass? 25 00:02:41,960 --> 00:02:44,919 That would be the whale. 26 00:02:44,919 --> 00:02:47,500 The whale is one of the largest animals 27 00:02:47,500 --> 00:02:50,680 that we have in the animal kingdom. 28 00:02:50,680 --> 00:02:54,680 So a whale has the largest mass. 29 00:02:56,000 --> 00:03:01,159 Let's move forward to exercise three. 30 00:03:01,159 --> 00:03:05,439 You will complete with green or yellow. 31 00:03:05,439 --> 00:03:10,439 So here we have the blank ball has more mass. 32 00:03:11,780 --> 00:03:16,780 Here we see that the yellow ball has more mass. 33 00:03:17,759 --> 00:03:20,120 It weighs more on the scale. 34 00:03:20,120 --> 00:03:25,120 So you should complete the yellow ball has more mass. 35 00:03:27,789 --> 00:03:32,789 Which balloon is bigger in this picture? 36 00:03:33,729 --> 00:03:47,120 Green or yellow? Yes, the green balloon takes up more space and therefore has more volume than the 37 00:03:47,120 --> 00:03:56,639 yellow. So you should complete the sentence, the yellow balloon has more volume. Next we have this 38 00:03:56,639 --> 00:04:04,319 one which is a little bit more challenging. We can see that the yellow box weighs five kilograms 39 00:04:04,319 --> 00:04:19,399 and the green box weighs 15. So which is a larger number? 5 or 15? Yes, 15 is the larger number and so 40 00:04:20,519 --> 00:04:31,959 the green box has more math. Now let's continue on page 85. Here we have an exercise for 41 00:04:32,759 --> 00:04:40,600 pictures of many different ingredients. Ingredients are one of the things that we 42 00:04:40,600 --> 00:04:49,879 use to make a food or product. So here we can see in the first example, we have milk and chocolate. 43 00:04:50,439 --> 00:04:58,519 When we mix milk and chocolate together, what kind of mixture do we get? Do we get salad, 44 00:04:58,519 --> 00:05:09,699 pizza, chocolate milk, or lemonade? Yes, that's correct. Milk and chocolate make 45 00:05:09,699 --> 00:05:19,139 chocolate milk. So you should match this to chocolate milk, the picture, and then 46 00:05:19,139 --> 00:05:27,519 to the words chocolate milk. Next we have water, sugar, and lemons. Do you think 47 00:05:27,519 --> 00:05:40,040 that makes lemonade or pizza? Tell me what you think. Correct. It makes lemonade. Here we have 48 00:05:40,040 --> 00:05:46,860 the picture and here we have lemonade. Next we have lettuce, tomato.