Gotta Eat! - Crash Course Kids 1.1 - By Crash Course Kids
Transcript
| 00:10 | we all eat , right ? But have you ever | |
| 00:12 | wondered why we eat ? I mean , some animals | |
| 00:17 | only eat plants , others just eat other animals . | |
| 00:21 | And some creatures eat both plants and meat . But | |
| 00:24 | the thing is all animals , including humans , eat | |
| 00:28 | , and we don't just eat because we're hungry or | |
| 00:31 | bored or tired or it tastes good . Although I | |
| 00:35 | could really go for a slice of pizza right now | |
| 00:37 | . We eat because we need food to live more | |
| 00:40 | . Exactly . We need the energy that food gives | |
| 00:42 | our bodies to grow , move and stay warm . | |
| 00:44 | You've probably figured this out already from the things you've | |
| 00:47 | heard about how and when we eat , like you've | |
| 00:49 | probably heard that breakfast is the most important meal of | |
| 00:52 | the day or you might know that runners will carb | |
| 00:54 | load before a big race , but food is necessary | |
| 00:57 | for all living things all the time . You may | |
| 01:00 | have noticed that your collection of cool rocks that you | |
| 01:03 | have under your bed never needs a lunch of club | |
| 01:05 | sandwiches and baby carrots . That's because they're non living | |
| 01:08 | things . But food is most definitely a necessity for | |
| 01:11 | animals and plants to even though we don't think of | |
| 01:14 | plants as eating because they don't have mouths , they | |
| 01:18 | still need food to grow and repair themselves just like | |
| 01:21 | we do . In fact , plants make a nifty | |
| 01:23 | model that can help us understand how the energy from | |
| 01:25 | food affects living things . To see how food affects | |
| 01:28 | plants . We can test what happens when they get | |
| 01:30 | more or less food . Plants get most of their | |
| 01:33 | food from the sun , water and carbon dioxide in | |
| 01:35 | the air more on that another time . But to | |
| 01:38 | test how food affects plants for yourself , you can | |
| 01:40 | use liquid plant food that way you can control how | |
| 01:43 | much food or nutrient supplant gets . So consider this | |
| 01:46 | little investigation . So you have two little plastic cups | |
| 01:50 | filled with potting soil and you planted a lima bean | |
| 01:53 | seed in each one . Then you give each plant | |
| 01:56 | a different amount of food . Plant . Number one | |
| 01:57 | would be your control . That means you don't give | |
| 01:59 | it any additional food at all . Just a little | |
| 02:02 | water and sunlight and it'll do what plants do all | |
| 02:05 | on its own . Then you can make plant to | |
| 02:07 | your extra food plant , Ask your parents for some | |
| 02:09 | liquid plant fertilizer and add the recommended amount to plant | |
| 02:13 | two . Now if you kept watering and feeding your | |
| 02:15 | plants the same amount for say four weeks , what | |
| 02:18 | do you think would happen ? Would you expect both | |
| 02:20 | of the plants to grow the same amount or would | |
| 02:23 | one grow more than the other ? If so which | |
| 02:25 | ones ? Well what you find is that plant to | |
| 02:30 | grow bigger than plant one Because living things need food | |
| 02:33 | to give them energy so they can repair themselves and | |
| 02:36 | stay healthy . And in this case , grow so | |
| 02:39 | with more food plant to got more energy , and | |
| 02:41 | that allowed it to grow bigger now , go eat | |
| 02:43 | your vegetables . |
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Gotta Eat! - Crash Course Kids 1.1 is a free educational video by Crash Course Kids.
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