Summer is here! We have a special treat for our little listeners, who are 10 years and below. Kids! Do gather paper and pencil to note the requirements of the activity which follows the story. The story is brought to you by Deepa.
Vanakkam, you are listening to Hello Educator.
Today’s episode of Hello Educator is from Mango Science Radio and the story is from Deepa. This particular story is specifically for kids below 10 years. So, parents who are listening to this, please gather your children and listen to the story.
00:40 Hello, mango radio listeners. My name is Deepa. Today I thought I will tell a story in science specifically for our listeners who are below 10 years old. Please note that there will be an activity at the end of the story for you guys to do. So let me start the story!
01:09 There were four kids named Surya, Renu, Diya and Zafar. Like you all, they loved playing, and one summer vacation they were all playing cricket outside when Surya said “I am tired”. Immediately the others agreed too, Obviously, they have been playing for so long, so they must be tired.
Diya suggested “Let’s go to my place, my mother has kept some nice cold rose milk in the fridge. We could all have some”. Everyone agreed and raced up to Diya’s house.
01:54 There, after a glass full of the nice cool drink, the talk turned to what each one did last summer. Zafar recalled that the last summer was very hot. He said, “ I remember, I was thirsty all day long”.
Renu said, “ Oh yes! I remember taking a bath at least twice a day to keep myself cool, and I was sweating and sweating throughout the day. Ugh, I didn’t like it at all.”
Diya said “No wait! That is not true. It snowed last summer”.
“Snowing in summer?” Zafar laughed. “No way, how can there be snow in summer?”
02:50 Then Diya asked her brother, ”Surya, you tell them. Didn’t it snow last summer? It was around May, right? And it was snowing, right?”
Surya agreed. He said, “Yes, it did snow at this time last year.”
Renu said, ”It’s impossible! Prove it”.
So all four went to Diya’s Dad. Diya said “Appa, can you show pictures of our last summer? It’s on your laptop”. So they looked at the pictures and like Diya and Surya said, there was snow in all the pictures. Dia and Surya were wearing warm clothes to keep themselves warm. They were fully covered with sweaters and boots and all sorts of things to keep themselves warm and it was white. There was snow everywhere!
03:50 How is it possible? They checked the date, and it did say May. But it doesn’t snow in May. That is when Surya’s Dad pitched in. He reminded them that these pictures were not taken in India last summer but in fact, they were taken in Australia.
“Does it snow in summer in Australia?” asked Zafar shocked.
“No Zafar, it does not snow in summer in Australia but it does snow in winter in Australia”, said Diya’s Dad.
“But it says May. Is it winter in May?”
04:48 What do you guys think? Is it summer or winter in May? Let’s do a small experiment and find out. So this is the activity that you’re going to do. The things you will need are – why don’t you take a paper and note down the things that you will need? – You will need
- A ball
- A marker
- A candle or a torch, and
- A piece of chalk.
Now, what you’re going to do is, you have to use the marker to draw a line cutting the ball into two halves. So this ball is going to represent the Earth for you, and the line you have drawn is like the equator that divides the earth into the northern and southern hemisphere.
05:55 There is no actual line drawn across the Earth, okay? This is an imaginary line. You’re just drawing that imaginary line cutting the earth into the northern and southern hemisphere. Now draw a dotted line running North-South through the middle of the ball. The previous line you drew was running East-West. Now this line should run North-South, this is a dotted line. This line denotes the imaginary axis on which the Earth rotates. Now, look at the globe or find out from an adult and mark a spot on the ball to indicate Australia. Once you have done that, light up the candle or a torch and keep it on a raised platform. This, we shall assume, is the Sun.
07:03 Now move this ball which is supposed to represent the Earth around the Sun keeping it a little tilted such that the dotted line that you have drawn on the ball should be slanting. It shouldn’t be straight, it should be slanting a little. Slant it a little and rotate it around the sun. Once you try this experiment I want you to record some of your observations. I’m giving a few questions here, you can record your observations for these questions.
- Q.1: Is the Earth the same distance from the Sun at all points?
- Q.2: Does the northern and southern hemisphere get the same amount of sunlight throughout Earth’s journey around the Sun? I repeat the question – when you’re making the Earth go around the Sun, does the northern and southern hemisphere of the Earth get the same amount of sunlight throughout the revolution?
- Q.3: When the northern hemisphere is slanting towards the Sun the southern hemisphere is slanting towards the Sun or away from the Sun?
08:47 You do this experiment and record your observation and I shall send you some material for you to read up. This way we shall find out whether it truly is winter in Australia when it is summer for us. Have fun doing the experiment. Bye.
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Music by Karthikeyan KC