Hunting for Properties: Crash Course Kids #9.1 - By Crash Course Kids
Transcript
| 00:09 | Hey guys remember what it was like in preschool . | |
| 00:12 | If you don't remember , here's a reminder , it | |
| 00:14 | was way easier playing with colored blocks , learning shapes | |
| 00:18 | . Those were the days . Good times . But | |
| 00:20 | here's a fun fact when you were learning how to | |
| 00:22 | put all those yellow blocks in a line or stuffing | |
| 00:24 | square shaped blocks through a square hole . You are | |
| 00:27 | also learning something very fundamental and that is how to | |
| 00:30 | judge and objects properties . But what do we mean | |
| 00:33 | when we talk about the properties of stuff ? Well | |
| 00:39 | , let's start with this . The stuff that makes | |
| 00:41 | up everything is called matter doesn't make any difference if | |
| 00:45 | it's a tiny grain of sand or all of the | |
| 00:47 | air that surrounds the earth , everything is made of | |
| 00:50 | matter and a property of matter is just any characteristic | |
| 00:53 | that we can list about it like how it looks | |
| 00:55 | feels or acts for example , my characteristics include having | |
| 00:59 | black hair , wearing glasses , having some wicked awesome | |
| 01:03 | nerd cred and well , you get the idea properties | |
| 01:06 | of matter are also things that we can observe . | |
| 01:08 | This means that they have differences that are big enough | |
| 01:10 | to notice . For instance , I'm currently observing that | |
| 01:13 | my desk is messier than it was five seconds ago | |
| 01:16 | . And to round it out properties of matter are | |
| 01:18 | also able to be measured . That is we can | |
| 01:20 | compare objects to each other but instead of just looking | |
| 01:23 | at them and getting a general idea of how they | |
| 01:25 | compare . We measure them by using tools that give | |
| 01:27 | us values or numbers . Now let's put all of | |
| 01:30 | these ideas to work by demonstrating how we can find | |
| 01:33 | a few basic properties of a simple object . Let | |
| 01:35 | me grab my measuring tape . Okay , okay . | |
| 01:41 | Look , I know I was just talking about how | |
| 01:43 | fun it was to play with blocks . But let | |
| 01:45 | me be clear . I am not playing with these | |
| 01:47 | blocks . This is science people . Now let's start | |
| 01:50 | with a couple of questions . One , what properties | |
| 01:53 | does this block have ? Well , there are some | |
| 01:56 | properties that we can observe but we can't really measure | |
| 01:58 | or describe them with numbers like this blocks color or | |
| 02:01 | what it's made of . Or even the fact that | |
| 02:03 | it holds its shape , which makes it a solid | |
| 02:05 | . So a better question to ask might be what | |
| 02:08 | can we observe and measure about this block ? Let's | |
| 02:11 | start with the big one here , length length is | |
| 02:13 | just a distance of something from end to end and | |
| 02:16 | this blocks length is 8.5 centimeters with meanwhile is the | |
| 02:20 | distance of something from side to side and its width | |
| 02:23 | is 8.5 centimeters height . That's an easy one . | |
| 02:27 | It's the distance of an object from its bottom to | |
| 02:29 | its top . Not to mention a major factor in | |
| 02:32 | being able to play basketball successfully in the height of | |
| 02:34 | this block is nine centimeters so length , width and | |
| 02:39 | height are some of the most commonly used properties , | |
| 02:41 | but there are a lot of others to for instance | |
| 02:44 | , our block is also an object shaped like a | |
| 02:45 | box that takes up space . That is , it | |
| 02:48 | fills up the space it's in . We call that | |
| 02:50 | space the blocks volume . We can measure the volume | |
| 02:53 | of this block using math based on the measurements that | |
| 02:55 | I just made , but we can also get a | |
| 02:57 | more general idea of its volume by making other observations | |
| 03:00 | , like the medium block easily fits into the bigger | |
| 03:02 | block . So we know that the medium block has | |
| 03:04 | less volume than the bigger block , but there's no | |
| 03:07 | way the medium block is fitting into the little block | |
| 03:09 | . So we know that the medium block has more | |
| 03:11 | volume than this small block . Finally , wait , | |
| 03:14 | is another measurable property of matter . Wait just tells | |
| 03:16 | us how heavy an object is when you go to | |
| 03:19 | a doctor's office and they ask you to stand on | |
| 03:21 | a scale . They're using that scale to measure your | |
| 03:23 | weight , got it good . So all Matter has | |
| 03:30 | properties and properties are observable measurable characteristics that we can | |
| 03:34 | use to tell them apart . And we got to | |
| 03:35 | know some of the most common and useful properties that | |
| 03:38 | we can put a value or number on like length | |
| 03:40 | with height , volume and weight . So hey , | |
| 03:44 | blocks , not just for little kids , also super | |
| 03:47 | handy for doing science . |
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