Friday October 25, 2019

Fantastic Friday!!

We began the day taking up the experiments from yesterday and doing more experiments about the properties of air!


Experiments from the yesterday:

Air takes up space:

Procedure:

1.Push the deflated balloon into the bottle and stretch the open end of the balloon back over the bottle’s mouth.
2.Without removing the balloon from the bottle, try and blow it up.

We could not inflate the balloon no matter how much we tried because the air was taking up the space in the bottle so there was no room for the balloon to inflate. 

Air resists things moving through it

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.

Air pressure:

can support solid objects in sustained flight. We used a hair dryer and a ping pong ball to see the effect. Balancing air pressure and gravity, we can make a ping-pong ball float in mid-air.The ping-pong ball will fly up with the air from the hair dryer until it reaches a point of balance – this is where the force of gravity (which pushes the ping-pong ball down) is equal to the force of the air (which is pushing the ping-pong ball up).

https://www.physicscentral.com/experiment/physicsathome/ping-pong-physics.cfm

This experiment will help us understand why planes fly when we start learning about flight! 

Air can be compressed:

We explored what happens to compressed air using a balloon as a rocket. We blew air into a balloon and then taped it to a rope and then released the balloon. What we saw was that the compressed air in the balloon came shooting out, which created a thrust movement which caused the balloon to shoot forward. Since the air is compressed it wants to escape and was given this opportunity when we let go of the balloon. 

Today:

Air can be compressed and has great strength:

We placed two books on a balloon and began to inflate. What we saw? That the inflated balloon could lift up the books!!!! We learned that the books were supported by the compressed air in the bag. 

Air takes up space

We used two cups, one that went straight 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. 

Air takes up space

We also did an experiment where we blew air into a tube that was connected to a cup that was in water. We saw that air takes up space and exerts pressure because when we blew air into the tube, all the water was replaced by air!! 

We also learned about the particle theory of matter which connected to the above experiment where students found out that they could pour air form one cup to the next. 
We used our researching skills to answer questions about the Particle Theory of Matter and showed our understanding of the three states of matter: liquid, solid, and gas. This is not to be confused with a fluid. Fluids can flow and therefore a gas and a liquid can both be a fluid.

After first recess and lunch we had French. 

Then we worked on our electric cars.

At the end of the day we had physical education. 

Homework:

1. Read Daily
2. Novel study - ensure all activities are finished
3. Finish adding any new information about the properties of air (experiments to mind map) and understanding of the particle theory of matter  
4. Math sheets 
5. Air test Tuesday