Let's find out, grade 2; I'm cold

Now, we invite you boys and girls to listen as your science lady brings you another let's find out program. Hello boys and girls. Are you cold? Are you warm? Are you ready for some experiments? Well let's be sure. I hope Mr. Summer and Miss Winter are ready. Are you? Good. We don't have many things to use today. Do we? Let's see. There are only four things. A piece of cotton cloth. Be sure you know which one is

the cotton cloth. And a piece of woolen cloth. Be sure you know which one is the woolen cloth. And a piece of cardboard to use as a fan. Have you got that? And a large paper bag. Well, we're all ready to begin. But before we do, will everyone answer a question for me? Now if all of you will speak in a quiet voice you can all answer together. Are you ready? Do you wear a heavy coat, a heavy coat on a hot summer day? Why? All right. Do you go barefooted out of doors on a cold winter day? Why? I guess you think those are pretty funny questions for me to be asking you. But you know, sometimes we do things and we never think about why

we do them. Today because we're scientists, you are scientists, aren't you? Because you're scientists, we're going to think about some things that we do and find out why we do them. Why do we dress the way we do? Why do we wear heavy clothes on cold days and thin light clothes on hot days? Mr. Summer, hold out one of your hands. Either one out in front of you, not too high, not too low, right out in front of your chest and away from your body. How does it feel? Is it warm? Is it cool? Well, let's suppose your hand we're out walking in a cold wind. Miss Winter, will you pick up the cardboard fan and fan Mr. Summer's hand? Make

a strong wind by fanning Mr. Summer's hand. Now don't hit his hand with a fan. Miss Winter, step back a little bit. Not too far. Step back so the fan will not hit Mr. Summer's hand and keep fanning. Keep a strong wind blowing on Mr. Summer's hand. Do you feel the wind on your hand, Mr. Summer? Is your hand getting cooler? Does it feel cooler than it did before the wind started blowing? All right, Miss Winter, you may stop fanning. Now we'd like to dress up Mr. Summer's hand. We'd like to try a cotton suit first. Mr. Summer, will you pick up the piece of cotton cloth and wrap it around the hand that was just out walking in the wind? Miss Winter, you might help Mr. Summer. Put the cardboard down on the table and help him. Wrap the cotton cloth around his hand, not too

tightly. Just around once will be enough. Can you tuck the ends in so that it won't fall off? I'll tell you what curl up your fingers, Mr. Summer, and then you can hold the ends of the cotton cloth so they'll be out of the way. Are you already? Mr. Summer, hold both of your hands out this time. Both hands out in front of you. One is dressed in a cotton suit and one has nothing on it all. You'd better face Miss Winter so she can fan both hands. Miss Winter, pick up the fan and fan both of Mr. Summer's hands. Keep the wind blowing. Keep it blowing, fan it hard. Are you getting tired? Well, you'll have you rest in a minute. Keep the wind blowing now though a good strong wind. Keep fanning until we tell you to stop. Mr. Summer, which hand feels warmer? Hold up the hand that feels warmer. Can you all see which of Mr. Summer's hands feels warmer to him? Is it the one

dressed in cotton cloth? Is it the bare hand? Remember which one it is. Will you do that? Alright. Miss Winter, stop fanning please. Put the cardboard down and help us, will you? Mr. Summer, hold out your bare hand. Keep the cotton cloth on your other hand. Don't let it slip off. Now, Miss Winter, will you wrap the other, Miss, Mr. Summer's other hand in the piece of woolen cloth? Don't let his fingers stick out. Cover his whole hand with a woolen cloth. Make a fist again, Mr. Summer, so that she can tuck the ends in and you can hold them. Are you ready? Alright, now both hands ought to be covered. One with a cotton cloth and one with a woolen cloth. Now let's see what happens. Hold both hands out in front of you again, Mr. Summer. Miss Winter, you're going to have to work again.

Let's get busy with that fan and get a strong wind blowing against Mr. Summer's hands. Fan his hands. Make a good strong wind. Keep fanning until we tell you to stop. Mr. Summer, which hand feels warmer this time? Hold up the hand that feels warmer. Can you all see? Alright, Miss Winter, stop fanning and thank you. This time a different hand felt warmer to Mr. Summer. Remember the first time when Mr. Summer had a cotton suit on one hand and the other hand was bare. Do you remember that? Mr. Summer held up the hand that felt warmer. Which one was it? Now when we wrapped the bare hand in wool and the other hand in cotton, which one felt warmer in the cool breeze? Was that a different hand?

Which one felt warmer? The hand dressed in cotton or the one dressed in wool? Mr. Summer, take the claws off your hand and hands and put them back on the table, please. We found out something, didn't we? Which piece of cloth kept Mr. Summer's hand warmer? Will you remember that? How many of you wore a heavy coat or a jacket to school this morning? How many of you wore no coat or sweater at all? When I let's think, on a cold winter day, we'd want to put something on to keep our bodies warm, wouldn't we? To keep the cold air out and the warm heat from our bodies in, wouldn't we? On a cold winter day? Well, how

about a warm summer day? We'd want to wear something that would let our bodies keep cool, wouldn't we? Do our clothes help us to stay cool or to stay warm? Will you think about that? Think about the kinds of clothes you wear on a very cold day. Think about the kind of clothes you wear on a very warm summer day. All right, let's try something else. We still have a great big paper bag. Now this time let's turn about. Let's ask Mr. Summer to do the fanning. Are you glad of that, Miss Winter? All right, Miss Winter, leave the paper bag on the table. Don't pick it up yet. We won't need it for a second or two. Miss Winter, face, Mr. Summer, how does your face feel right now? Warm or cool? Mr. Summer, fan,

Miss Winter's face with a cardboard fan. Keep a good wind blowing toward her face. Don't get too close. We don't want you to hit her nose with that fan. Keep fanning. Now keep fanning until we tell you to stop. Miss Winter, does your face feel cooler now in the breeze? All right, Mr. Summer, stop fanning and put the cardboard down on the table. You can help us here for just a minute. Pick up the big paper bag, Mr. Summer, and slip it over Miss Winter's head. You won't mind having your hair messed up a little William Miss Winter. All right, pull the bag down. Watch out for her ears. Don't let them get stuck out there. Pull the paper bag down as far as it'll go. Will it fit over her whole head, face, and all? See if you can pull it down until it edges the opening part of the bag touches her shoulders. Have you got it down there?

How do you feel, Miss Winter? Are you getting warm inside the paper bag? Now, Miss Winter, can you stand still? Suppose you put one hand against the table or put it on the table. Sometimes that helps when we can't see. Sometimes we can't stand very still. So hang onto the table with one hand. Are you still facing, Mr. Winter? Well, you don't know. Do you? Mr. Winter, a fixer so she's facing you. All right, good. Pretty warm inside that paper bag, Miss Winter? Well, let's see if we can make you feel a little cooler. Mr. Summer, pick up the cardboard fan and fan Miss Winter's head. Let the wind blow against the paper bag. Keep a strong wind blowing. Miss Winter, are you a little cooler? Can you hear from inside the bag? You'll have to speak up loud, Miss Winter. Does the wind make you feel just a little cooler?

All right, let's take the paper bag off your head and put it on the table. Just pull it right off. How do you feel, Miss Winter? Better now? Good. Would paper like the paper in the bag make a good dress or suit to keep you warm? Did much air go through the paper bag, Miss Winter? Not much, did it? But I wonder if paper would make good warm clothing for us on cold winter days. I think if you thought very hard and tried another experiment, you could answer that question, don't you? If you think paper, now just think paper like the paper bag would make good warm clothes, will you talk about it and tell the other boys and girls in your room?

If you think paper would not make good clothes, will you talk about that? Here's another question. Do the kinds of clothes we wear help us to keep cool on warm days and warm on cold days? Will you think about those questions and will you remember the cotton cloth and the woolen cloth and the paper and try them again to make sure which one keeps you warmer? All right, bye. Let's find out originates in the studios of KSLH, the St. Louis Motor Education radio station. This is the NAEB radio network.