In science class today we did 2 experiments related to air. The first experiment was title "Damp Dunk" and asked the students to solve the problem: Does air take up space? The second experiment was titled "Bag in the Bottle" and students needed to solve if air exerts pressure?
Watch the 2 videos from the experiments and please leave a comment sharing your conclusions about what you learned.
Experiment 1
Experiment 2
Looking forward to reading your comments... :)
Damp Dunk
ReplyDeleteIn this experiment we put a crumpled paper towel at the bottom of the beaker and dunked the beaker upside down in a container of water. We noticed that if you let go of the beaker it will turn right side up because of the air flipping it around. However if you hold the beaker in the water the paper will not get wet because the air around it is making like an air pocket.Since there is air in the beaker it keeps the paper dry.
Bag in Bottle
ReplyDeleteIn this experiment we took a plastic bag, wrapped it around beaker and sealed it with a rubber band. Then we tried to pull out the bag but it was hard to pull out it felt like something was pulling it in!This is because the thing layer of air inside the beaker is pulling it back in.
For the bag in the bottle experiment we put a bag in a beaker and then sealed it with a rubber band. I tried to pull the bag out of the bottle, but it resisted because of the air inside the beaker pulling back in. This happens because of the air pressure.
ReplyDeleteBag in bottle
ReplyDeleteThis experiment we took a plastic bag wrapped it around a beaker and tied it with a rubber band. When we tried to pull to the bag the pressure inside the bag would pull the bag back into the beaker, afterwards we pulled the rubber band off and then tried the rubber band came right off!
Damp Duck
ReplyDeleteWhen we put the crumpled paper in the glass and put it in the water, the air inside the glass is making a air pocket around the paper, keeping it dry. To keep it dry, we had to pull it out straight. But if we pulled it out sideways, the air would escape, replacing it with water.
Damp Dunk
DeleteWe learned that the air has so much pressure when sealed the bottle with the elastic band over top of the bag the pressure was so strong we couldn't pull it out
ReplyDeleteOn the first experiment (damp dunk) we put a paper towel in a beaker then placed the beaker upside right in a tub of water. We found out that water will not get into the beaker because the air pressure will keep the water out of the beaker!
ReplyDeleteOn the second experiment (Bag in a Bottle) we put a plastic bag around a beaker and wrapped an elastic around the beaker and tried to pull out the bag. It was quite hard because since we put the elastic band around it there was air sealed so the bag was hard to pull out. When we took off the elastic it was much easier for the bag to come out because the air pressure was not their because it escaped so we could pull the bag out.
Bag in a Bottle
ReplyDeleteWhen our group got a beaker, we grabbed a plastic bad and place in the beaker. We then sealed the plastic bag with a rubber band. We now had to try to pull the plastic bag out of the beaker. It was hard to pull the plastic bag out of the beaker because the rubber band sealed the air in the beaker. So when you tried to pull the bag out, the air pressure resisted your tug. It took some great effort to pull the bag out!!
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ReplyDeleteDamp Dunk
ReplyDeleteFor this experiment we put a paper towel in a beaker then pushed the beaker in a bowl filled with water. The paper towel stayed dry because air takes up space. The air in the beaker took up all the space in the beaker so no water could get in.
*bag
ReplyDeleteDamp Dunk
ReplyDeleteIn this experiment, we put a crumpled paper towel in a beaker, stuffed it to the bottom, and dunked it upside-down in a bucket of water. Surprisingly, the towel stayed dry! This is because the air in the cup did not allow the water to enter the beaker and soak the paper towel.
Bag in a Bottle
In this experiment we put a plastic bag in a bottle and sealed it with a rubber band. When we tried to pull the bag out, the air pressure became to low and sucked the bag down. This is similar to suction.
Damp Dunk
ReplyDeleteIn this experiment we took a paper towel and a beaker and put it in a bowl of water. When we pulled the beaker was still dry!this was caused by the air in the beaker going into the bowl of water which made the paper towel still dry!
Bag in a Bottle
ReplyDeleteThis experiment we had to put a plastic bag in a jar then sealed it with an elastic band. We all tried to pull out the bag but no one could because the air pressure was to great. The bag was sealed very tightly with an elastic bag so the air pressure was pulling against our pull.
For the damp dunk experiment we crumpled a paper towel and put it in a beaker. We filled a bucket with water and then pushed the glass straight down and held it there. When we pulled the beaker back out the paper towel was not wet because of the air pressure that pushed the water out. If we did not hold the beaker down while it was in the water the beaker would pop right out of the water because of the air pressure pushing the water out.
ReplyDeleteBag in a Bottle
ReplyDeleteFor this experiment, we put a rubber band around a beaker with a bag in it. When we tried to pull it out, the pressure of the air pulled the bag down.
Damp dunk?
ReplyDeleteWill it be wet or dry? This experiment was probably had one of the most surprising outcomes I have ever come across! once me and my group had crumpled up the paper towel and placed it in the beaker, we placed it upside down in the water. Our first try we let go of the beaker and it turned sideways, this is because the air pressure in the beaker wanted to escape so the beaker tipped sideways. On our second try , when we pulled the beaker out, the paper towel was dry, this is because the air pressure is holding the water out.
deep dunk
ReplyDeletewe put a piece of paper (in a ball) inside a glass beaker.we then dumped the beaker inside a tub of water.We took the piece of paper and touched it to see if it got wet.It wasn't because the air took up so much space the water couldn't get in!
Damp Dunk
ReplyDeleteWhen our group got our beaker, we stuffed paper towel with paper towels at the top of the beaker. When then had to push the beaker in the water and pull it out. We then realized that the paper towel was dry. This happened because air takes up space! So when we pushed the beaker in, the paper towel stayed dry because there was air in the cup. But you have to watch that you push the beaker straight down and straight up. If you push it down at angle, the air will escape and it will be replaced by water.
bag in a bottle!
ReplyDeleteIn this expiriment, our class put a bag in a beaker and sealed it with an elastic band so it was air tight. When we went to pull the bag out it was very hard, this is because the air pressure was pulling the bag in. This ment that when we pulled the elastic off, or in our groups case, got a hole in the bag you could easily pull the bag in and out because the pressure escaped. Another thing I found interesting was that when you went to push the bag back in it was very hard, I believe that this was caused because when you pulled the bag out you were esencially creating more space for the air so when you were pushing the bag back in you were pushing the pressure into a smaller space.
Bag In A Bottle
ReplyDeleteFor this experiment we put a plastic bag in a beaker and sealed it with a rubber band. When we tried t.o pull the bag out it was hard because of the air pressure that was pulling the bag back in. When we took the rubber band off it was very easy to pull the bag out. With the rubber band on, trying to push the bag back in was harder because when I pulled the bag out I created more room for air, so then I was pushing air out of the beaker