Water Rocket

What are rocket's fins for?
How important is it for a rocket to be aerodynamic?
Does it matter how light it is?
Does it matter how the weight is distributed?
What is the definition of a rocket
How much energy do rockets need?
What is a suitable rocket fuel?
Where are real rockets launched?
What is the best fin shape?
How far are water rockets supposed to go?
How does the egg survive?
What is the point of the egg?
Where can I simulate water rocket launched?
What is a suitable amount of fins for a rocket
Where is the best place for fins?
Could a water rocket explode?
How would other liquid/air combinations work?
How many PSI can the 2 liter bottle take?
What is the best launch angle?
How could one hit the boat?

Materials:
Two, 2-liter bottles
One small brick of foam
Carboard
Tape

The physics of a rocket. The weight of the rocket keeps one end in the correct position and the fins create air resistance so the rocket cannot go anywhere but straight ahead. Without weight of fins the rocket will not go straight. As air pushes the water out of the tank the rocket pushes the water out and the water pushes back onto the rocket creating thrust.

The method I used to protect my egg was a piece of old foam from a couch. I cut it to fit inside my nose cone and cut a little circle out to perfectly fit my egg. The idea of this concept was to keep the egg safe by making the impact safer. The foam slowed the impact of the egg by extending the contact time of the egg.

Results: My rocket launched a total of 15 whole meters. My egg did not break. My launch angle was 43 degrees and the amount of water I used was 670ml. I looked at previous launched and decided from those what a good water measurement was. I figured my rocket didn't launch successfully because it was to light.

During this lab I learned something I already knew. It's not a good idea to procrastinate. If I had done one or both of the practice launches I could have fixed the flaws of my rocket but still gotten the same amount of points.

Tug-of-War

1) List all of the questions your group came up with based on this prompt "Tug of Wars and Physics"?

What is the function of the rope?

Where is force important for the winning team?

What causes friction in the rope?

How much force acts on the rope?

How can one person exert a lot of force?

How is the losing team losing?

How does the ground affect the force?

Is it possible to break the rope?

2) What is your one focus question?

How is tug-of-war different on grass or cement?

3) List your Hypothesis- what do you think & why

People can put less forces (friction) on grass than they could on cement making the over forces less.

4) Explore & Investigate- describe everything that you did to help you answer your focus question.

We went outside and tried tuf of war on different surfaces to see how it can affect the game.

5) Wet grass provides less friction than cement. Physics.

Free Falling

1) I chose this video because it was short and informational.

2) This video is better than others because it is short and has enough information to understand free falling.

3) If I were to make a video on free falling I would make it short with enough information to understand the concept of free falling.

Spaghetti Tower

1)

2)

3) 82cm was our towers final height.

4) Our current design is excellent, one thing I dislike about it would be the foundation. The foundation could have been more sturdy.

5) The biggest challenge we faced was constructing the middle part of the tower, we overcame that by working slowly and carefully.

6) If I had the opportunity to redesign our tower I would just make it better in general, by spending more money on more tape to make it more sturdy. Right now it's pretty minimalistic.

Self
1) I felt pretty good during this activity it was a challenge but nothing to hard.

2) Our design was pretty different to everyone else in the class. It was small while everyone else went big.

3) If I could choose a material to add to the mix I would add hot glue, even though that might make things too easy.

4) I shared building and buying responsibilities.