Science Grade 3 5 19 Weather and Climate

hi welcome back I'm scientist Kate this is grade three weather in climate chapter 1 lesson 2 measuring rainfall this lesson includes an investigation and if you want to do the investigation along with me you're gonna need some materials here's what you'll need two identical cups one container with holes punched in the bottom place that's allowed to get wet like I'm going to use this bucket but you can use your kitchen sink or your bathtub or even the sidewalk and you're also gonna need some water if you're watching this online you can pause it and get those materials now but if you're watching this on TV and you can't pause that's okay you can just do this along with me when we get to it are you ready let's go okay so in the last lesson we talked about how we're working with the Wildlife Protection Organization acting as meteorologists and meteorologists are scientists who study the weather and we're going to be studying the weather of three islands to determine the best place to put wildlife reserve for orangutans remember that reserve is protected area of land for animals to live now here are the three islands we looked at last time Ark Island Blue Island and Creek Island we're looking for place for the reserve that has specific type of weather do you remember the two weather conditions from the last lesson that we're looking for if so say them now did you guess hot weather and rainy weather if so awesome job remembering okay so got this email from the wildlife protection organization it's two meteorologists that's us and it's from the wildlife protection organization the subject is island weather data here's what it says welcome to the wildlife protection organization team we're collecting weather data from arc blue and Creek Islands weather report from each island is attached let's check it out okay so here's the island weather report for one single day you can see it's set up like table here's the information for arc island here's the information for blue island and here's the information for Creek Island you can see they've given us two pieces of information about each Island one is the temperature and the other is precipitation precipitation was one of our words that we studied in the last lesson do you remember the four types of precipitation we observed in the video in the last lesson say them out loud now if you remember them the four types of precipitation are rain snow sleet and hail and if you think about it rain is the only one that comes out of the sky is liquid the other three are all frozen forms of precipitation look down this temperature column and see if you see any island that might have snow arc island says an ice cube melted when it was left outside blue island's temperature says 95 degrees Fahrenheit and Creek Islands temperature says it is hot do any of those sound like places where there might be snow don't think so all of those places sound pretty warm now want you to ask yourself this question which island is hottest look over that temperature information and think about which of those islands sounds like it's probably the hottest I'm gonna do the same thing go ahead did you decide on the island you think as the hottest which island did you pay had hard time deciding which island to pick because was little confused by all of the different types of information they were giving us it says Creek Island is hot and that blue island is 95 degrees Fahrenheit but is Creek Island hotter than 95 degrees Fahrenheit don't know I'm kind of confused which island is rainiest take look at the precipitation column arc Island says it didn't rain much blue Island says the rain filled two bowls and Creek Island says 20 millimeters of rainfall I'll give you second to think about which island you think had the most rain which island did you pick had time picking on the most precipitation as well mean how big are the bowls that they used to measure on blue island and when they said that it didn't rain much on ark Island how much is not much I'm kind of confused and think need some more information today we're going to investigate this question how can meteorologists describe weather in way that helps them make comparisons do you remember what comparison is when we think about how things are alike or different we are comparing them when we think about which island is hottest Irenaeus we are comparing the islands when we compare the places orangutans live to these islands we are comparing so we can find the best island for the reserve all right we are going to do the investigation so if you gathered all those materials at the beginning great or you can just follow along with me while do the investigation as reminder for this hands-on activity you will need two identical cups one container with holes punched in the bottom and place that's allowed to get wet because we're gonna be pouring some water now to make your container with holes punched in the bottom punched holes myself because I'm an adult you need to get an adult to help you punch holes in the bottom of your container just to be safe okay all right so here's what we're going to do we're gonna set up the containers with cup at one end and cup at the other end those are the two identical cups that told you to get so I've marked one and one and we're going to put them into the container that we're allowed to get wet so you can put it again into this bucket or you can put it into your sink or your bathtub or you can take them outside but make sure that they're on flat surface so that they don't tip over then we're going to use the rain cup and the rain cup is really the container that has the holes punched in the bottom you're going to pour some water into the rain cup and you're going to make it rain over the two different places cup and cup you can move the rain cup so that the water falls as much or as little into the two cups as you choose but make sure that you're keeping the water inside of your container so you're not splashing the water all over the place if you're watching this online and you want to do this yourself at home now is good time to pause and follow the directions that put up on the screen here to do the investigation once you've gotten some water into your cup X&Y from making it rain you can unpause and come back and we'll analyze what what our observations and our measurements are so go ahead and pause if you're gonna do this at home if you're going to follow along with me on the video here we go alright I'm gonna make my screen little bigger so that you can see what I'm doing I've got my bucket here and I've got my two identical cups labeled and and the reason I've labeled them is to show how they're different and these are gonna act as two different locations that are receiving rainfall I'm gonna put them down into my bucket let me tilt my camera down so you can see what I'm doing okay hope you can see all right now I'm gonna start putting some water into my rain cup with the holes punched in the bottom and I'm going to make it rain are you ready and if you're doing this at home you can make the water go as much or as little as you want to just try to keep it into the bucket okay that seems like enough so I'm just gonna set my reign cup over here and I'm going to take my two rein cups out of the bucket they're little wet on the bottom probably should have had towel that's okay now need to think of way to measure how much water is in each of my cups need tool and the way that was thinking is to use popsicle sticks so have popsicle stick labeled why don't know if you can see that and have popsicle stick labeled so I'm going to put the popsicle stick labeled into the cup and then I'm just going to mark where the water line is okay so I've marked where the water line is on popsicle stick why and I'm just gonna do the same thing for popsicle stick okay now and make this little darker so that you at home can see I'm just going to put them side-by-side so that you can see the difference can you see that popsicle stick or I'm sorry cup has more rainfall than Cup so can compare these two cups by looking at how much rainfall fell we're gonna save this data for later because we're gonna compare our data to the data collected by some of my friends you ready so because I'm doing this experiment at home wanted to invite couple of my friends to do the same experiment at their houses so we could all compare our data asked my friend ma cherie and my friend Brooke to do the same exact process we just did here together at their houses and report their data back to me ma cherie told me that she didn't have any popsicle sticks at her house that she could use to measure the depth of the water so instead she used pop cubes and Brooke said she didn't have popsicle sticks or pop cubes at her house so she chose to measure her water different way she got little tiny cup and she filled the cup over and over again and counted how many times she could fill the small cup from her big cups in order to measure how much water was in her cup and her cup why so took all of that data and put it together into this table now take look at this table this table shows how we measured the data we third Fork up how much rain was in Cup and then the data we gathered for how much rain was in cup you can see that here's my popsicle stick measurements here are ma sharees pop cube measurements so she had three pop cubes high in cup and two pop cubes high and cup for Brooke she was able to take the water from cup and fill smaller cup two and half times and four cup why she was able to fill her smaller cup four times so we all use different methods of measurement in order to compare our cup and cup if you look at the popsicle stick data can you tell which of my two cups had the most water I'll give you second to look an answer yeah it was cup you can clearly see that cup had more water in it than cup now look at ma sharees data can you tell which of her cups had more water yeah it was cup as well so she had three pop cubes high of water in cup and two pop cubes high of water and cup so cup had more water now look at Brooks data which of her cups or had more water in it yeah Cup why she was able to fill that smaller plastic cup two and half times with the water that was in Cup and she could fill it for full times with the water that was in Cup so mockery and had more water in our cup and Brooke had more water in her cup now have real challenge for you want you to look down Cup X's data and decide who me ma cherie or Brooke had the most water in their cup I'll give you minute to think about it you what did you come up with did you have trouble deciding yeah it's pretty hard to compare popsicle stick to pop cubes to the number of fills it's really kind of confusing now look cup why can you decide which of us had the most water in our cup why yeah it's the same problem it's really hard to compare data when you use all different forms of measurement so we can only compare rainfall amounts that are measured in the same way do you think real-life meteorologists use tools like popsicle sticks and cups to measure rainfall do you have any ideas about how you think meteorologists might measure rainfall you can tell me those are great ideas thanks for sharing meteorologists live and work all over the world and so to be able to communicate with each other about how much rain has fallen in an area they have to use the same type of measurement they don't use popsicle sticks and they don't use pop cubes they actually use standard unit called millimeter and millimeter is really tiny amount so found this tape measure just in tool box out in the shed and on it there are some standards of measurement and want to show you millimeter so I'm going to get this kind of close to the camera as matter of fact I'm gonna expand at the camera so that you can see and these big one two three those are inches which you may be familiar with measuring and inches the millimeters are actually these tiny little guys right here down the edge so millimeters are really small and so in order to measure how much rain has fallen meteorologists measure using millimeters this way so I'm going to measure my cup in millimeters right now and I'll get back to you with the data that find okay so asked ma cherie and brooke to go back and measure their rain falling cup and cup using millimeters so that we would have one standard unit of measurement so that we could compare our data and added my data into so if you look up here in the data chart you can see that my popsicle data have 15 millimeters for cup and 11 millimeters for cup ma cherie converted her pop cube measurements into 18 millimeters for cup and 12 millimeters for cup and Brooke converted hers from her tiny plastic cup measurements into 10 millimeters for cup and 16 millimeters for cup so now I'm gonna ask you looking down cup data who among me ma cherie and Brooke had the most water in their cup I'll give you minute to give me your answer did you guess ma cherie right off the bat yeah it was so easy to see to be able to compare 15 18 and 10 knowing that they're all in the same standard measurement we know for sure that ma cherie z-- cup had the most okay let's look at cup did you guess who had the most in their cup yeah you didn't even have to guess did you you just knew it was Brooke she had 16 millimeters where ma cherie only had 12 and only had 11 see how much easier it is to compare when we measure everything in standard measurement so thinking back to those three Island data that we got from the email earlier do you have any new ideas about how to compare the islands weather want you to think about it and tell me you great ideas remember that we're investigating this question how can meteorologists describe weather in way that helps them make comparisons have some new ideas from our lesson today and also have some questions that have popped up usually when scientist is doing science they get all kinds of new ideas that they want to write down but also some new questions arise so here are my new ideas for today scientists use millimeters to measure rainfall so everyone around the world can understand and compare rainfall measurements and if we want to compare the rainfall of the three islands to find out which one is the rainiest we need that data in millimeters now my questions moving forward for our next lesson maybe you have the same question as me is there common measurement for temperature definitely something to chew on for next time all right this is scientist Kate grade three weather and climate chapter 1 lesson 2 signing off we'll see you next time bye you