Tremendous Thursday!!
We began the day with Math. We reviewed our homework about number patterns and then we moved onto working on our Math Review for our Patterns in Whole Numbers Unit. Our Test is on Monday.
Next, we had French.
After first recess and lunch we discussed the experiments that we did yesterday to gain a better understanding of air and its properties; a reminder our test is on Tuesday. Yesterday we did another experiment to confirm that air takes up space.
We used two cups, one that went strength down and another cup that filled up with water. After, we were able to transfer the water from one glass to the other AND we were able to transfer air from one glass to the other!!! Air was able to flow/pour from one cup to the other!!! From this experiment we were able to see how air takes up space so that the water was not able to go where there were air bubbles.
For our next experiment we put a candle in water and then flipped a cup over the candle. We saw that the water started to rise up in the cup!!! Again, from this experiment we can see that air takes up space so the water was not able to go into the cup but the fire from the candle uses up all the oxygen in the cup and therefore there was more room for the water to enter the cup and rise up. A lit candle needs to draw oxygen from the air in order to continue burning. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen. So, when the oxygen is all used up, there is now room for the water to enter into the cup.
We did another experiment with crumpled paper and intact paper. We dropped both of them and saw that due to the larger surface area of intact paper, it took longer to fall then the crumpled-up paper. So we were able to conclude that the crumpled paper has less area for air to resist and falls to the ground before the intact paper.
We also had a conversation about air pressure and how we feel more air pressure at sea level versus up in the mountains. This is because gravity pushes the air down and when you are at sea level there is more air that is being pushed down but when you are up in the mountains there is less air and therefore lower air pressure and as a result less oxygen to breathe.
Today our big focus was how air expands when heated. Yesterday we did an experiment to demonstrate this effect. There was a dent in a ping pong ball and then it was placed in hot water. As the air heated in the ping pong ball, the air expanded, and the dent popped out and the ping pong ball was back to normal. We also did an experiment with a plastic with a similar effect. When hot air from a hair dryer was blown on a closed plastic bag, it began to grow as the air inside of it expanded.
Today, we did an experiment with a balloon on a plastic bottle that was placed in hot water and then cool water. We saw that when the balloon was placed in hot water the balloon inflated!!!! We found out that is because hot air: rises, the molecules move quicker, they are more spread out and it is lighter. Then we put the bottle in cold water and we saw that the balloon deflated!! We were able to deduce that this is because cold air sinks, becomes
denser and heavier.
We did one more experiment to explore the effects of hot air rising. An aluminum coil was hung from our ceiling that was standing still. Once Ms. Jaskolka put some candles underneath the aluminum coil, it began to spin!!!!! We were able to conclude that hot air rises and as a result, the candle heats the air under the aluminum coil. The aluminum coilbegins to turn as a result of the warm air rising and following the pattern of the coil! Very cool!!
After second recess and lunch we had physical education with Mr. Orr.
Homework:
1. Read Daily
2. Writing due Monday (If kids rules the world)
3. Math Review- most of the review was completed in class (Students had an hour to work on it) – Student are asked that all pages are complete except the last page we will finish in class tomorrow
4. Math Test Monday
5. Flight Test Tuesday
6. Trip Form and payment due Friday
7. UOI: 3 pages
8. UOI: Mind Map of what we have learned about air so far – This will help the students study for our test on Tuesday
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