Boat Or Submarine

Title  Boat or Submarine  

Scientists: Inderpreet and Zeb.

Question/Goal/ problem

What shape of container will hold the most weight ?

My partner and I have decided to go with pan.

Hypothesis (The shape I have chosen and why I think it is the best shape)

Because it has a larger bottom, it can hold more coins and can float.

Materials

Container filled with water, modelling clay, old coins

Method (What I did)

Create a boat out of modelling clay.

I Fill the container with water.

Place the boat carefully onto the water so it floats.

One at a time, put coins carefully into the boat . Count how many coins are in the boat before it sinks.

Observation/ Analyse (What happened and why I think it happened)

It sunk because it got heavier and holes were formed.

Conclusion  (What I discovered about floating/ sinking )

The bigger it is the better it floats and it can hold more coins.

This is me and Zeb's container, it successfully held 5 coins!

Oh yeah, this is a pan alright...

Balloon Rocket

Balloon Rocket

A few day’s ago, we started a science rotation. We first did a science experiment with our teacher, than the next day we go to a different class and do one. The first class room 16 went to was room 15, there we did a science experiment called balloon rocket. We had fun doing it, this is what we had to do, enjoy reading and please leave a comment :-).

Equipment

* Tape (duct tape works best).

* A balloon (the long ones work best).

* 15-20 feet of string.

* Straw (a straw that you use to drink milkshakes).

* And 2 chairs

Method   

Take the string and tie each end of a string to each chair but before you do that, put the string through the straw (the string should be separated as long as it can, if it goes beyond 20 feet, cut it so it is a length of 15-20 feet).

Next tape the balloon to the straw, blow the balloon but don’t tie it (don’t blow it too much or else it won’t work), just squeeze it so the air doesn’t come out.

Lastly take the balloon to one side of the string (make sure that the part you’re squeezing is next to the chair). Let go and see what happens...

Question

What do you think will happen?

Predict

I think the balloon will fly across the string.

Observe

It glided across the string like I said, some people blew too much air in it and it went crazy when it was released and failed.

This happens because when the balloon is released, the air in it comes out and pushes the balloon across the string.

Race A Speedboat

Race a Speedboat

Can you make a paper boat race across the water just by gently touching the surface of the water?

Hypothesis (What I think will happen)

I think the boat will race forward a little (depending on how the boat is made).

Materials

Coloured card, washing up liquid, pencil or sharpie, scissors, large container of water.

Method (What we did)

We made a boat, put dishwash on our finger,put our boat in the water, tap the water behind the boat and it floated across the water.

YAY I'm nearly the end (the middle one)

Oh no Dylan's boat is falling apart (the red one)

Observation (What happened)

It floated  across the water

Conclusion (Why I think it happened)

Because the boat was on strong flat water, with dishwater liquid made the boat go faster but it raced forward because when you tap the water behind the boat it breaks the surface so the stronger side (the front) pulls it to more stronger areas, if you chased the boat with your finger it would run away and go fast because you're breaking the water behind it which makes stronger water pull it.  

Short Experiment to Follow Up

Make Metal Float

Gently place a paperclip on the water’s surface.

Hypothesis (What I think will happen)

It will float because it’s not that heavy.

Observation (What happened)

It floated, it made a dent in the water and made it’s way across the water.

Conclusion (Why I think it happened)

Because it was light, it didn’t sink, it was also on plane flat water, if the water broke (started splashing and making small waves) than it would sink.

Air Exists

Air Exists

On Monday the 21st of October, my class did a science experiment about air. It was to find out if air exists, we needed a bucket, a jam jar and a paper towel.

We were meant to get split into groups and fill our bucket with water. Next we had to get the paper towel, fold it and put it in the jar. Then we had to tipped the jar upside down and push it to the bottom of the bucket. We were then asked if the paper towel will stay dry. I heard alot of people say yes, but we had to write why we thought yes or no. I wrote yes, because when the paper towel gets folded and put in the jar, it is filled and pushed down to the bottom of the bucket it will not fall out and it will stay dry.

We then got put in groups (I was the science captain of my group) and tested it ourselves. I was shocked to believe that it worked! I only guessed it would but it did. It was because when the paper towel gets folded and put in the jar, it is filled with air and pushed down to the bottom of the bucket it will not fall out and the air is keeping it dry, the air is it's cushion.

Does Air Have Weight?

Does Air Weigh?

On Tuesday the 29th of October, my class did a science experiment on if air weighs.

Equipment

* 1-Volunteer

* 4-Newspaper’s (2 will be used, 2 for spares encase one rips)

* Table

* 1-Ruler (maybe 2 or 3).

Have a great time trying the experiment :-).

Predict

I predicted air doesn’t weigh. Because it’s just air. It’s wind it’s thin and weighs nothing.

Method (Observe)

1. First you need a volunteer who does a good karate chop, get the ruler and put it on the table, half of it on the table and half of it sticking of. make the volunteer chop the part of the ruler that’s sticking of the table.

Question

What will happen to the ruler?

Predict

It will launch up into the air and fall.

Method (Observe)

The ruler should go up into the air and fall.

2. Next, get a Newspaper’s and crumple it up, put the ruler back on the table in the same position. Then put the crumpled up paper on the side of the ruler that’s on the table. Get the volunteer to karate chop the part of the ruler that’s sticking of the table.

Question

What will happen now with the newspaper on the ruler?

Predict

The crumpled up newspaper will go flying, like a catapult.

Method (observe)

The newspaper sorta works like a catapult, only it shot forward a little and then fell.

3. Finally get a newspaper with no rips, flatten it on the ruler (the ruler should be in the same position it was before), take all the air out of the newspaper (by fully flattening it on the ruler part that’s on the table). Than karate chop the part of the ruler that’s sticking out.

Question

Do you think it will brake?

Predict

No. It didn’t break before, It won’t break now, plus how is it going to break when the newspaper is just flat.

Method (observe)

It got chopped but didn’t break (I was right... Or was I?). Mr. Moriarty told Ollie to try again and this time it snapped! It snapped because the newspaper on the ruler had been flattened out completely so the air pushed it down (I thought it was just gravity... I was told I was wrong?). I did start to believe it.

So this is the answer: Air does have weight.

I hope you enjoyed reading, you should try this (if it doesn’t work the newspaper is probably just not flat enough).

The newspaper was flat, the air pushed down
on it causing the ruler to snap

I hope you enjoyed reading this and please leave a comment :-).

The newspaper's flat, it might just break
once again