1. The Dolphin Meteorologists By Melia, Xiaotong, Karina and Akansha

2. Weather Station Team Team:Dolphin Meteorologists Objective:Measuring Weather Our team has been collecting data on measuring weather. We measured humidity, wind speed, rainfall, barometric pressure, wind direction, and temperature. Here is our weather station and data collected by our team. Our Weather Station 1.Humidity - Melia 2.Wind Speed - Melia 3.Wind Direction - Xiaotong 4.Rainfall - Karina 5.Barometric Pressure - Akansha 6.Temperature - Akansha

3. 1.Hygrometer (humidity) How does our Hygrometer work? A hygrometer measures humidity. We created this using: a piece of cardboard, a dime, and a strand of hair. We measured it by using a scale of 1 to 5, 1 being very dry and 5 being very humid. Observations: When the air is dry, the strand of hair is shorter than when it is humid. When we observed the hygrometer, we noticed when it rained, the plastic point dropped lower than when it didn’t rain. Day Number Dates Recorded Humidity valueComments 1 11/10/201 41lots of wind 2 11/11/201 42 3 11/12/201 43no wind 4 11/13/201 44super slow 5 11/14/201 44small breeze 6 11/15/201 44on and off wind:fast, slow, medium, slow, etc. 7 11/16/201 44 8 11/17/201 43 9 11/18/201 44rained 10 11/19/201 44 11 11/20/201 45rained 12 11/21/201 45rained/drizzle 13 11/22/201 45rained 14 11/23/201 45no wind, no breeze

4. 2. Wind speed meter How did we measure wind speed? We used: cups, straws, a piece of cardboard and a pencil. How we measured wind speed was how many times a certain cup passed a certain point on the base in 1 minute. Observation: We noticed that only three days in two weeks there was more than one rotation per minute. Day Number Dates Recorded Rotations Per Minute (RPM)Comments 111/10/20148.00lots of wind 211/11/20140.25hardly even moved 311/12/20140.00NO wind,super slow,moved three inches 411/13/20140.50super slow 511/14/20140.00small breeze but didn't budge 611/15/20140.50on and off wind:fast, slow, medium, slow, etc. 711/16/20140.50slow 811/17/20140.25slow 911/18/20145.00rained 1011/19/20140.00no wind 1111/20/20140.00rained 1211/21/20140.00rained/drizzle 1311/22/20144.77rained 1411/23/20140.00no wind, no breeze

5. 3.Wind Direction What is a weather vane, and how did we use it? To make the weather vane, we used needle and thread, an expo marker, a paper plate, a pencil, some blue painters tape and some clay. How we determined wind direction was by placing the weather vane outside and recording the threads direction We noticed that the wind usually blew south, and on most of the days that the wind didn’t blow south on, the wind blew west. Either that, or I was on vacation in Las Vegas. My Data Tuesday, Day 1: West Wednesday, Day 2: South Thursday, Day 3: South Friday, Day 4: West Saturday, Day 5: North Sunday, Day 6: South Monday, Day 7: South Tuesday, Day 8: West Wednesday, Day 9: No wind Thursday, Day 10: South Friday, Day 11: South Days 12-14: Out of town Our weather vane AFTER I fixed it( It fell off of a table and we lost the thumbtack AND the original pencil). My graph/chart of my data

6. 4.Rain Gauge What is a Rain Gauge and How Did We Use It? *To make the Rain Gauge, we used a plastic water bottle that’s empty, a ruler and a Sharpie to mark the inches. *We measured rain by letting the rain gauge stay in place outside and letting rain(if there was any) slide down the tube and drop into the container. *We noticed that if it rains over a long period of time and the rain is heavy, it’s more likely to collect more rain than over a short period of time and to have less rain. Day NumberDATETIMEINCHES 111/10/20145:00 PM0 211/11/20145:00 PM0 311/12/20145:00 PM0 411/13/20146:00 PM0.38 511/14/20145:00 PM0.38 611/15/20145:00 PM0.38 711/16/20145:00 PM0.38 811/17/20145:00 PM0.38 911/18/20145:00 PM0.38 1011/19/20145:00 PM0.43 1111/20/20145:00 PM0.82 1211/21/20145:00 PM0.82 1311/22/20145:00 PM0.87 1411/23/20145:00 PM0.87

7. 5.Barometric Pressure A barometer is used to measure air pressure. We used a glass jar, a large balloon, a rubber band, and a straw. Observation: 1)When the straw was pointing up, there was rising pressure. 2)When the straw was pointing down, there was falling pressure. 3)If the straw was pointing to the middle, there was steady pressure. DateTimeNote 11/10/20147:31 p.m.rising air pressure 11/11/20147:34 p.m.steady air pressure 11/12/20147:30 p.m.steady air pressure 11/13/20147:30 p.m.falling pressure 11/14/20147:30 p.m.steady pressure 11/15/20147:30 p.m.steady pressure 11/16/20147:30 p.m.rising air pressure 11/17/20147:30 p.m.rising air pressure 11/18/20147:30 p.m.rising air pressure 11/19/20147:30 p.m.falling pressure 11/20/20147:30 p.m.falling pressure 11/21/20147:30 p.m.falling pressure 11/22/20147:30 p.m.falling pressure 11/23/20147:30 p.m.falling pressure

8. 6.Temperature A thermometer is used to measure temperature. We used a clear plastic bottle, water, rubbing alcohol, a straw, and modeling clay. Observation: ●The hotter it was, the higher the liquid rose. This was because the warmth made the mixture of water and rubbing alcohol expand. ●The colder it was, the lower the liquid was. DateTimeTemp (F)Indicator 11/10/20143:30 p.m.75Rised to indicator level 2. 11/11/20143:31 p.m.65Rised halfway to indicator level 1. 11/12/20143:30 p.m.60At the bottom. 11/13/20143:30 p.m.67At the bottom. 11/14/20143:30 p.m.67At the bottom. 11/15/20143:30 p.m.68At the bottom. 11/16/20143:30 p.m.63At the bottom. 11/17/20143:05 p.m.66Rised halfway to indicator level 1. 11/18/20142:30 p.m.63Rised halfway to indicator level 1. 11/19/20143:30 p.m.65Rised to indicator level 2. 11/20/20143:55 p.m.57At the bottom. 11/21/20143:45 p.m57At the bottom. 11/22/20142:30 p.m.57At the bottom. 11/23/20142:30 p.m.68Rised halfway to indicator level 1.

9. Summary Rising Pressure Clear skies Less humid No rain Rising temperature Falling Pressure Cloudy More chance of rain More humid Cooling temperature

10. ●We had trouble matching our data because we recorded at different times. ●The entire team had to remember to record data every day. We had to ensure everyone was doing their part. ●Collaboration was important for us to succeed. YAY! TEAMWORK ●We used Google Docs to record our data and put together our slides. What we learned

11. Thank You! Melia, Xiaotong, Karina, Akansha 4th grade The Dolphin Meteorologists