Tag: Science

Hi bloggers, in today’s blog, I will talk about the four experiments we did and what their effects were in our class experiment. These experiments include Diffusion, Conduction, Contraction, and Convection.

 Convection 

Convection is the transfer of heat through the physical movement of fluids, which can be liquids or gases, driven by density differences. Warmer, denser fluids rise while denser fluids sink, creating a convection current. It’s a primary method of heat transfer, critical for weather patterns and ocean currents that may affect daily life, like checking weather reports and the currents of the ocean.

Hypothesis – I think that the potassium in both hot and cold water won’t take long until they start to rise and fall, making spiral patterns

Equipment – potassium permanganate, tweezers, beaker, water

What we used to record the data – Timer, Paper, Pen

Experiment 

In the experiment, we used the great concept of convection to use a potassium pomogranate and soak it in cold and hot water to see which can form convection and how it would rise and fall, eventually making spirals in the water with the potassium pomogranate. With the cold water, I could definitely see that great purple spirals were going through the water. And quickly, I was able to see the convection fast, making the potassium rise and fall. Wrapping up the cold side of things

Though I found that inevitably, the hot water was generally faster in making the potassium rise and fall with the spiral pattern coming through as well. Wrapping up this experiment, I was able to find out that soaking potassium pomogrnate in hot water is quicker to take action than cold water, but if you want to see the potassium rise and fall, making spirals, I would say that you should use cold water instead, but if you need quick and fast results, use hot water.

Conclusion – The hot water was relatively quicker than the cold water, and my hypothesis was right being that they only took around 10 seconds to rise and fall in the water.

Conduction

Conduction is the process by which heat or electricity is directly transmitted through a material or substance when there are differences of temperature or electric potential between adjoining.

In the experiment, we used the rules of conduct to see the heat transmit n the hot rod from the hot plate to see the wax melt and see the pins fall.

Hypothesis – I think that the pins will drop relatively quickly and won’t take too long

Equipment – pins, hot plate, thin metal rod, bigger thick metal rods, wax, paper, timer, pencil

What we used to record data – paper, pen, timer

Experiment

We first had to place a hot plate on the desk, then grab a metal rod placing it on the side we get a thinner rod with wax and pins on the rod, then We placed the rod at an angle where the pins are facing downwards, and the tip of the rod transferred the heat to the rod so were using the rules of conduction for heat transmitted through a material substance when there are temperature differences.

Lastly, we wait for the pins to drop and mark your times in your sheet of paper so we can record the data and use them to do blogs like this and remember the times the pins had dropped.

Conclusion – The pins dropped at a minimal time, and my hypothesis was mostly right, being that the longest pin took a major step in time to drop.

Chart On Time When Dropped And Pins

Contraction

Our Aim – We wanted to use contracting to crush or fatten Pepsi cans that Mr smay generousy drank a Pepsi can a day for us to do this experiment, so we can see the mechanics of contraction work and crush a Pepsi can

Hypothesis – I think that the can will crush because, since there won’t be any air in the can, it will be lighter than air, crushing the can

Equipment – Hot plate, Pepsi can with a small amount of water, tongs, ice cream container with cold water inside

What we used to record data – paper, pen, timer

Experiment

Contracting generality in science refers to a reduction in size, volume, or length, which is typically due to cooling or can be activation of muscle fibers generating tension. We had essentially used this concept in our experiment, using a hot plate and cold water to effectively flatten the can by using the mechanisms of contraction by first pouring a small amount of water into the Pepsi can, then put the Pepsi can on the hot plate until it steamed. Now this creates gas, which is what we need because the steam will rapidly expand and push the air out of the can into the atmosphere. Then, by using tongs to flip the can upside down into the cold water, the cold water quickly and instantly turns the steam back into condensed water, effectively crushing the can altogether.

Conclusion – My conclusion that the cans will be lighter was right, but the cans didn’t turn out how I though it would be, because instead of flattening, they were crushed from all sides, making my conclusion mainly right.

Diffusion

Diffusion is the passive, net movement of particles, atoms, ions, or molecules from an area of higher concentration to an area of lower concentration, driven by the random motion of particles until they are evenly distributed.

Hypothesis – I thought that the hot water would quickly fill the water with the potassium and be quicker

Equipment – potassium permanganate, beaker, cold water, hot water, tweezers,

What we used to record the data – paper, pen, timer

Experiment

In the diffusion experiment, we again used potassium pomgranate. Instead, we checked how fast the water could turn purple from the potassium pomgranate in cold and hot water.

We first used cold water in the experiment to see how long it would take for the effects of diffusion to begin, and see the particles spread out and fill the water with purple potassium pomgranate. Surprisingly, it didn’t take long for the effects to kick in, and it really didn’t take long, only taking a few seconds, and I marked the times with the cold water, having a time of 57 seconds, which is really quick for cold water.

Now with hot water, I was swiftly able to tell that there weren’t many changes as before, as I could only see that there was a change in the way it diffuses. Seeing that it took 45 seconds to fully fill the beaker with potassium pomogranate.

I recorded the data with a pen, paper, and a timer. I checked the time after the potassium pomogrante fully dissolved into the water.

Conclusion – My hypothesis was really right, and I think that this was my best hypothesis out of all because from the data I collected, I could see that it really didn’t take long to finish, for the cold was only taking 57 seconds which is just under a minute and the hot water only taking 45 seconds which is really quick and was the fastest experiment we did out of all.

More Information I Have

Diffusion

Convection

Conduction

Contraction

Hello blogger, today we are learning of the shape or colour effects where you see where they are. We are doing this in science class because we want to see how different people see with their own peripheral vision.

How we did this experiment was that we used a huge protractor with a pin at the middle, then we used a popsicle stick with a blue triangle on it. After we had everything we put the popsicle stick on the side of the protractor and once you see the shape and colour you say stop and see were you saw it so then that’s one way you can check your peripheral vision.

We found out the worst and best colour for our peripheral vision except for harry because he had gotten a perfect 1 out of 1 score for his peripheral vision.

My worst Peripheral vision colour was green, and caleb’s worst was blue and I’m sure the reason was because of the shades of colour we used for each colour. So because we used  a darker shade a green Caleb got a worse score than the others because the other colours were a lighter shade. Now for our best peripheral vision colours, my best ones was orange and pink. And it was probably because of how light the shades of the colours were. Now for caleb his best was pink because of the same reason like mine, it’s because of the shade of the colour.

introduction:

Today in period two we had an experiment with air planes with paper we had to make a good enough to get first place and it went very well for our team. We were team four.

Middle:

First we went to google to search up some designs and air planes. We picked this plane with these flaps. We thought it was gonna be easy to build but it was actually kinda hard to make them.

We also had to make another one but it was a smaller version of the big one.

End results: 

The end was better than I expected. We came second! I was not expecting it. When I realised we came second I was kinda happy but mostly surprised. But I’m happy we came second.

Our method:

the method we used was google and a video first we searched for the best paper air plane to use. Then we found a nice and good looking one. We used it and we actually got second place. (witch you saw in the writing I did)

hypothesis:

my hypothesis was the smaller it is the better it was but not too small or it wont work so kinda small and the bigger it was the less it would go.

equipment:

two pieces of paper one normal A4 and a quite small one.

Hello today me and my friend harry did an experiment it was with bubbles,water,bubble wand,balloon,bubble mixture and your head.

1.  You first go to a table and spill a some water  on it.
2.  After get the bubble mixture and get your bubble wand and dip the wand in the mixture.
3.  then aim the bubble wand with the mixture on the water then blow gently on it. The bubble should go in the water.
4.  After with the balloon put it on your head and rapidly rub it on your head until your hair turns weird.
5.  Then get the balloon near the bubble but not on the water. It should move where the balloon is and make sure you hold the balloon and don’t let the balloon hit the water or the bubble.

Conclusion: its very fun to do and messy but its very cool to make a bubble move with your head and balloon its very slick.