Tag: Science

Egg parachute experiment

Hello readers today I will be telling you about the parachute test that we had to do in science

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Aim

We did this experiment so we could learn about the forces that go into play when something is falling, we were learning about how forces and mass properly works via making a parachute.

Research

when researching I mostly figured we needed a way for us to catch the air to create air resistance when the egg was falling, we then looked at many parachute designs and ended up making one that worked similar to a hot air balloon.

Method

  • We first did some research into how to catch the air
  • Then we did some research on multiple designs
  • Then I started making the padding for the cup our egg was going to be held in
  • Then we started working on the design for the parachute
  • Then we made some tweaks to make sure that we could minimise the weight on the parachute

Results

Our egg managed to not crack throughout the entire fall and we landed onto the floor successfully, However we didn’t drop the parachute properly and it couldn’t collect all the wind to create any resistance and so it couldn’t fall as slow as we wanted it to. It took us a total of 2.75 seconds for our parachute to fall and if we had done it properly we could have very well hit at least 4 seconds on our fall

Discussion

The reason that some of the other design’s fell faster or slower could just simply be the way the dropped it all the way to the design itself, some design’s had very little plastic in the design meaning that the air couldn’t catch properly and the air resistance just didn’t work like it could have, or the design wouldn’t have had enough rope to make sure the plastic wasn’t pulled to create an area where the air could be caught not allowing it to catch the air and simply making it fail.

Conclusion

Something I would change for next time wouldn’t actually be the design in any way and instead change the way we dropped the top of it so it was open and had the ability to catch the air in the plastic meaning there was very little air resistance that allowed for it to fall as slow as it could have.

End of topic test – Science

Hello readers today I will be going over my entire term of work and all the topics I covered in the term

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Dna (Deoxyribonucleic acid) is a fundamental Molecule that carries our genetic code which is basically our genetic instructions which shows us how we will grow, age and change, it decides what we will look like and how we will come out at the end, For example. Our DNA is what makes us look and act like how we do and its different for everyone. Inside of our DNA is gene which is a small part of it that targets one specific area as in our eyes or hair. Our gene is one specific area of our DNA targeting one area as well, whether that be hair, eyes, height or anything along those terms, For example. If our DNA is like a complete book then our gene is one specific chapter of that book. Our gene is usually chosen between two choices each gene called the allele’s. An allele is the choices that our body makes typically 2 between the father and mother’s traits and we have a chance to get either one though sometimes its very little for some of it, for example. If the gene is a instruction book to how we bake cookies then our alleles are the different variants as in chocolate cookies or normal cookies but instead its our light hair or dark hair instead of something along those lines. We inherit these alleles from both of our parents every time as they basically give part of their genetic code and we inherit either the fathers or mothers side. Inheriting can be near anything whether its looks, personality, smarts or even items all things can be inherited by family members and some times outside of family if its a person giving an item instead, for example. I inherited a lot of money from my father when he passed or I inherited my mothers green eyes but my fathers black hair. We inherit these alleles which can be put into this thing called a punnet square. Punnet squares are these table’s where the input the fathers genes on the top and the mothers genes on the side and laying out the alleles in that order they can list out the chance of the baby getting certain features from each parent essentially guessing what the baby has the highest chance of looking like, for example. The father has the alleles of Bb which has a dominant allele and the mother has the allele’s of aa which are both recessive allele’s when we lay this out on the punnet square,we will found out that the baby has a 25% chance of inheriting the mother’s blue eyes while it has a 75% chance for the father’s brown eyes. These alleles we put on a punnet square can actually create what we call natural selection say when a dog inherit’s the fathers long fur and the other puppy was to inherit the mothers short hair, the short hair pup wouldn’t survive in the cold climate and would eventually not make it to the age needed to reproduce while the pup with long hair would be able to and this is called natural selection.

Natural selection is when the animal with the least suited trait for surviving dies out and the one with the best suited for surviving manage to create offspring which slowly the animals traits will go towards the animals traits making them more likely to survive in where they are being raised, for example. The fathers traits were much better suited for the animals survival so only half of the off spring survived and it was the ones with his traits. However for such a process to happen the father has to live long enough first so that he can even reproduce. Reproduce is when a Female of the species and a Male of the species fall in love or in some cases don’t even fall in love just following instinct reproduce and create babies of the same species and either gender the amount of babies will always nearly vary between species and sometimes even between the same species the amount of offspring will be different as well and this process on repeat slowly causes an evolution. Evolution is when over hundreds of years the species traits become so different they can basically become an entire different species and at times they are counted as a new species, for example. Over the hundreds of years the wolf has been around for thousands of years slowly changing and becoming new species for example huskies which were once wolves but evolved over years and years to become the house pets they are today.

 

Zombie genome

Hello readers today I will be showing you how I made a entire DNA code for a zombie

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AIM

The aim of this experiment was for us to get confident using punnet squares and to master the aspects of using a punnet square and make sure that we understood how to

Method

We had to pick the parent genomes and create a zombie out of the genome and punnet squares. The different alleles for each thing was… Skin colour: S and s, Hair: H and h, Limb count: L and l, Clothing: C and c, Teeth: T and t, weapon: W and w. I decided the traits that my zombie had using a punnet square which is basically a square where you predict the chance for each allele to come out over the other allele.

Results

Discussion

The gene is composed of the dna’s sequence… Allele is one or two versions of a gene that is found in the chromosome… genotype is the actual DNA you come out with at the end of the day… phenotype what the person looks like compared to their genotype as they might have pasty skin but tanned so they have darker skin that would be their phenotype… to fill out a punnet square you put the fathers alleles at the top 2 and the mothers alleles on the side 2 boxes then you bring the fathers alleles down 2 boxes and the mothers alleles across 2 boxes making 4 different combos for the possible gene finding the most possible gene, the point of this is to predict the actual gene or get an idea on what the baby will look like…

Conclusion

The punnet squares did work and I don’t think I would change anything for the next time we do this

Dna Extraction

Hello readers today I will be going over my recent science experiment when we extracted some Dna from strawberry’s …

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Aim

The aim of today’s experiment is to Extract the DNA from a strawberry so we could see what it looks like, and so we could learn the ways of the lab for the class…

Method

The method For the DNA extraction from the strawberry went like this, 1st step we grabbed some strawberry’s and put it into a plastic bag second step we put some dish soap into the bag on top of the strawberry’s, we then put some salt on top of the strawberry’s then finally we put some water into the bag and made sure to zip up the plastic bag tightly and then start mushing constantly to make sure its at least part liquid. Then we Poured the mushed strawberry’s into a cloth over a beaker the partly mushed strawberry draining through the cloth to make sure that the liquid was no longer full of mush. Then we grabbed the breaker and poured the liquid into a test tube where we let it sit for about 5 minutes before we poured ice cold ethanol into the test tube on top of the strawberry liquid we then mixed for about a minute then sticking a pipette into the test tube which we picked the DNA up with.

Discussion

2 things I learnt from this experiment is that its possible to extract DNA from a strawberry this shocked me because I thought DNA was to small for the eye to see yet we could see it when we did this method what I want to know if its doable with other fruits and vegetables such as Brussels sprout or apples as that would be cool, the second thing I learnt is how to extract DNA from fruits, this method and way of doing it was something I did not expect…

When we extract DNA from saliva, blood and plenty of other things we can test the genetic for mutations and disorders to identify any disorders in the DNA, they do this with machines, such as centrifuges, homogenises and a couple other machines the machines, the centrifuge spins the sample at high speed using centrifugal force to separate the components of the sample.

Evaluation

The experiment worked well in my eyes because of the clear set of instructions we had to follow. One thing that I think went well was our straining speed as it went by very fast and effectively. one thing we could have done better in my eyes would be something like the amount of liquid we got out from the straining something we could have done to make it more effective was maybe get more mushing of the strawberry’s in before we put it on the cloth or get more water into the plastic bag as this could have made for a better proportions of liquid

Science experiment refraction with light!!

Hello readers today I am doing a experiment with refraction using light that gets shot out by L.V power supply which powers a light.

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AIM:

The aim for this experiment is to learn about refraction.

HYPOTHESIS:

My hypothesis is that the light would make plenty of patterns and that it would be hard to draw or take photos.

EQUIPMENT:

#1: the L.V light #2: paper #3: light #4: light #5: camera

THE METHOD:

  1. Plugged in the L.V power supply by plugging it into a wall port
  2. Set the light onto the paper to make the pattern
  3. Place objects on the paper to make the patterns for the photos
  4. Then take photos and outline the patterns(outline it onto the paper)
  5. And lastly place these patterns/photos on your blog

WHAT IS HAPPENING IN THE EXPERIMENT?

The things that happened to the light was that it bounced off the glass objects and created patterns that then refracted to many other ones to create cool patterns on the paper which we then outlined and took photos off these patterns we made multiple different patterns using this method.

HOW DOES THE LIGHT BEHAVE LIKE THIS? 

The light can behave like this because of the lenses and its ability to create refraction. the convex lens helped the light focus outwards while the concave focused the light inwards unlike the convex.

 

Slot Observation Picture
No Slot,glass arch+Metallic arch and Convex Reflection towards metallic arch
Thick slot + arch Less refraction + focus
No slot + concave mirror More refraction and some reflection
No Slot + Triangle,convex,Metallic arch and glass arch More focus towards triangle then refraction to convex to a tiny  bit towards metallic arch

DISCUSSION:

At first when it had one slot on the light it got directed forward and slowly spread out when he had two the angle’s changed and went in a different direction however, when we used the lenses it changed a commendable amount. with a convex lens it pushed outwards while the concave focused it inwards which we ended up using by mixing both the lenses in different ways.

eye dissection

Hello readers today I am telling you about the eye dissection I did on Friday in this dissection we mainly focused on the lens inside of the eye

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Date

friday 6th of June

Aim

the aim of the experiment is to teach us about the eye, in this case it was a cow eye. it taught us about the different parts of the eyes and how the eye parts layer up, So that is the aim of this experiment.

Research

Method 

the method of this experiment is

  1. put on gloves
  2. set up the tray
  3. get the eye and put it onto the tray
  4. grab the eye and take a photo
  5. cut the sclera
  6. pop the lens out
  7. take photos and then dissect it some more to find the other parts

Results

Discussion

the science behind this experiment is that we got to learn about the parts of the eye, instead of learning through a screen also more of the science behind this experiment is that we got to see all of the other parts of the eye without looking at a screen and actually got it engraved in my brain.

Conclusion

yes the experiment did go as planned but next time I would like to be the person doing the cutting because I feel like I actually could do it this time because last time I didn’t do it because it was to grotesque but next time I would want to.

 

heart dissection blog

Hello readers today I am doing a blog on the heart dissection that we had to do on circulation and how the blood gets around so this is the blog about how the blood gets around the body and this blog explains it al.

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We found a total of 1 valve, both ventricles, the left ventricle. the right ventricle pumps the blood to the lungs so that the blood can get oxygenated and the left ventricle pumps the blood around the body. And the heart strings there are stringy things inside a heart called heart strings these keep the heart together and in one piece cause without these heart strings your heart would fall apart. The muscle is so thick on the left side because it has to pump blood all around the body while the right side is a lot less thin because it just has to pump the blood just to the lungs unlike the left side

arthritis blog

Hello readers today I have some questions that are about arthritis

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Questions

  1. what is arthritis: arthritis is when the cartridge is  so badly damage that the other bone is basically rubbing against the bone creating extreme difficulty pain.
  2. what are the causes: One big cause is when rugby players go into the scrum and damage their joints and cartridge but there are many other ways to damage these joints and cause arthritis
  3. what are the symptoms: the symptoms of arthritis are joint pain,stiffness and small range of movement
  4. what are some treatment options: some of the treatment options are therapies,medications and lifestyle changes can also help

chicken wing dissection

Hello readers today I am doing a blog about the dissection that I did on friday

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date: 9th may 2025

my group was me,tehari and cash

Aim of the experiment

the point of this experiment was to teach us how everything in the arm works and how all the tendons move the muscles and how the muscles relax and strain to move the body around

Research

the humerus is connected to the shoulder with a ball joint and a tendon, the humerus has a bicep and a triceps and when the bicep relaxes your lower arm will move down while if the biceps were to strain the lower arm would move up going into the arm flex position. the tendons also help with this movement by using the force from the muscles to allow for things like bending,rotating and straitening the arm.

Method

the steps were quite simple like just putting on gloves then ripping the skin off the top then we would dissect the muscles and cut the tendons we would then take the muscles of the bone and show the bone clearly on video(or take pictures) next we would show how the arm and everything else works on camera(or by photos) then we would clean and take our gloves off.

Evidence

Discussion

the science behind this experiment was too show how the tendons move the muscles and how the muscles helped move the arms and the bones in the arms and how the wing of a chicken does its thing.

Conclusion

it did work exactly how I thought the chicken wing would work, because I did not think that the chicken wing would be so different from the human arm and I was right. though the hands were quite different compared to human arms. next time I would want it too go a little bit quicker so we can get rid of the other muscles in the lower arms like the other groups.

Heat blog

Hello readers today I am doing an assessment

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Conduction-

The experiment we did for conduction was heating the end of a metal rod and letting the fire spread its thermal energy to the next particle which eventually made the sticky slime that was holding the pins melt and proceeded to make the next pin drop. The key learning for this experiment was to make us realise what conduction was and that some materials are better conductors than other materials.

Contraction-

For this experiment we put a little bit of water in a can and boiled the water in the can We then flipped the can really fast into a bowl of cold water making the can have no particles or anything in the gap with no water which made the can contract and get smaller at a rapid rate. The key learning for this experiment was for us to know what contraction is and so that we know that particles vibrate faster and closer together when thermal energy taken away causing solids gasses and liquids to contract.

Diffusion-

For the diffusion experiment we put a skittle in cold water and watched it spread out and then did it in hot water and timed the difference speeds that the little colour melted. The key learning was for us to learn is that diffusion is when particles spread out and take up as much space as possible making it completely full of particles.

Convection-

The experiment that we did for convection was to drop potassium permanganate down a straw into boiling water and watch the crystals purple trace go around to the top and down to the bottom again and again making a tornado effect. The key learning was to make sure that we knew that when areas with more thermal energy in their particles will rise while areas with less thermal energy will fall

 

My favourite experiment of the four was the contraction one because I was the one that got allowed to flip the can into the cold water

 

Here is the experiment write up for contraction.

 

 LEGEND – Contraction

 

Section Your writeup
Title – Your title should tell readers about your experiment Can this expand or will it contract 
What is Contraction? Find or draw a picture that shows the process of contraction and put it here:

Contraction is when there is no particles at all so the can or whatever you are using is going to get smaller at a fast rate 
Aim The aim of this experiment was to show how contraction works 
Hypothesis – What do you expect might happen? During this experiment, I predicted that the can would contract really fast when put into the cold water 
Equipment – What equipment did we use? The equipment I used was:

  • Water
  • Bunsen burner 
  • Can 
  • Tripod 
  • Gauze 
  • Safety glasses 
Method – What steps did you follow to complete this experiment? The step-by-step method for my experiment is as follows:

  1.  Put the can on the tripod 
  2.  Turn the bunsen burner on the blue flame 
  3. Once the can is steaming from the inside flip the can into the cold water and watch it contract 
Results

With your group, make observations about what happens to the water as it is heated, and how the aluminium can reacts to being put in cold water

 During the experiment I observed that:

  • That it did not take long at all to contract once placed in the cold water 
  •  
  •  
  •  
Discussion

Using the word list below, explain why plunging the steam-filled can into cold water caused it to implode:

  • Condenses
  • Gas
  • Space
  • Particles
  • Air pressure

List two ways you would like to improve your experiment if you did it again.

 As steam, the water particles in the can form a space where there are no particles at all which makes the gas leave as quickly as possible and creates air pressure which makes it contract

I think I could make my experiment better by:

  • Doing it a couple times to be more accurate 
Conclusion

Finish this sentence to conclude your science report.

 My results supported/did not support (highlight one) my hypothesis because my results showed that the second that the can touched the cold water it contracted 

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