We are learning about kinetic energy.

What did you do:

What me and my buddy did was we lined up different coins and put them in smallest to largest.We had to do this for a reason and that reason was to prove that kinetic energy spreads through each coin until it goes to the last coin.

What did you predict would happen:

We predicted that each coin would separate.

What did you observe:

We saw coins lined up from biggest to smallest and we saw that the kinetic energy separated the coins that were formed in a line.

How did the energy transfer in this experiment:

It transferred through each coin

How it transferred was that when we slid the biggest coin the kinetic force went through each coin until it hit the last ending coin.

What is energy:

At this point no one is sure what energy is all  we can do is  describe what it does.

Hypothesis:

My hypothesis was correct because I predicted that the coins would spread out since the kinetic energy transfers through each coin.

Hello,welcome to my science blog post.

We made modifications on paper planes to see how far they go and what you would need to make it go further.

If you have a normal paper plane it will travel distance but if you fold the end of a paper plane it travels longer and lasts longer in the air.

the more pointier the tip is the further the plane is going to go.When the tip is heavier it will last longer in the air and sometimes it will come back to you making a circle in the air.

Here are some bullet points that makes a paper plane go faster and further distance.

Distance:

• Sharp edges
• even folds
• Pointy tip

Height advantage:

• More weight
• Heavier paper plane

If you need help on how to make a paper plane here are some instructions you can follow:

Colorful Bold Student PSA Infographic Walkthrough Template (1)

What makes a good paper plan compared to our old ones:

Here is the difference between our new planes compared to our old one.

Variable graph

As you can see when we made our first paper plane it travelled a smaller distance and shorter height while with our new plane it travelled far and travelled longer.

Bullet points explaining what we learnt:

1.Aerodynamics

2.Weight

3.Surface area

4.Thrust

Our new paper plane looks like this because we had thought of doing a sharper tip,the reason behind why we thought this was because when we tried making our first paper plane it had a short tip and didn’t travel that far but when we made a sharper tip it travelled way longer and flew,then our old ones.

Hypothesis: If I do sharper ends on the plane it will go further and if I do heavier ends it will last longer in the air.

My hypothesis was correct because our new plane travels further in distance and height than our old one.

introduction-We are investigating how many drops it takes to make a coin  overflow.

Soap disturbs the water and it has a lower surface tension so if you jump in a  pool full of soap it won’t hurt at much but if you jump in with salt then it would hurt more because it is a higher surface tension.  If you belly flop into vinegar it won’t hurt as much as if you belly flop into water but it will sting because its vinegar and if you stay in it for too long you will dissolve so don’t try at home.

Conclusion-you can fit more drops of  vinegar on a coin the A,B,D and water.

Surface tension-

Surface tension is what holds the water on the coin and there is surface tension  on the top of the water so when you belly flop into the water and when it makes a big splash it hurts the surface tension,but if you dive in hands first you are pushing the tension apart and it makes the water softer and easier to access.When you add soap to water it breaks up the surface tension.