People with hay fever cry more when cutting onions than others

Explanation by Joe

My hypothesis is that people with hay fever cry more when cutting onions than others.

I found out a lot of useful onion and hay fever facts. There were a lot of strong facts and some not so strong.

One of the strongest I felt was the fact that the onion’s gases aren’t the reason why we cry when we are cutting an onion – it’s that unique smell that makes you cry. The reason for this is the strong odour because when it hits your eyes they produce tears to protect themselves from such a unusual smell.

Another cool fact is that as you get further into the core, the gases get stronger and so does the odour. Also I found out that hay fever is an allergy (which I have). This means I am more sensitive to strong smells then others. I also found out that there are lots of household tricks to help stop people from crying like peeling the shell and then washing before cutting. This will prevent the odour vastly. You also can stick a metal spoon in your mouth.

My experiment

What I am hoping to prove in my experiment is that my hypothesis is right. To prove this I and an assistant will both smell a bowl of diced onion. If my hypothesis is right I will cry way more than my assistant who does not suffer from hay fever.

I enjoyed doing this because I found out lots of different things about onions and hay fever.

My bibliography

Interne	www.Ask.com		12th and 18th of August
Internet	www.wikipedia.org		18th and 19th of August
Internet	www.answers.yahoo.com		12th and 18th of August
Internet	www.cod.com/trivia/explain/docs/onions.asp		12th, 18th and 19th of August

Bean seeds need sunlight to grow!

Hypothesis

My hypothesis is that ‘Bean seeds need sunlight to grow’. I am about to tell you almost everything there is to know about my hypothesis.

What I found

The first thing I need to tell you is that bean seeds are manly used in cooking but some can be used to treat illnesses like the Azuki which can help the kidney and other illnesses.

Most Bean and seeds are grown in the soil but you can actually grow seeds hydroponically which is growing them in water and other places other than the soil.

I have found out that to grow bean seeds it usually takes 7-10 days to germinate (sprout) but some can take less time.

In my Science Symposium I need to find out what other things the seeds need to grow and why they need them. Seeds need the sun to make food to grow. They also need the sun to create chlorophyll which makes the leaves green.

Seeds also need soil to provide the right nutrients for them and the soil holds the roots in place so the seed will grow.

Seeds need water because it helps the roots of the bean seed to break through the soil.

 

 

 

These are pictures of the bean seeds I grew
These are the seeds that had sunlight
These seeds didn’t get sunlight

 

 

Bibliography

Resource	Date
Book – Plants- eyewonder books published in 2005	Wk 5
Infoplease.com	Wk 6
101vegitarianrecipes.com	Wk 4
Library.thinkquest.org	Wk 7
Spaceplace.nasa.gov	Wk 5

 

 

By Ashleigh

 

 

 

 

 

 

 

 

Worm farms are great for the garden

 

 

 

 

 

 

 

 

 

 

 

A Complete plant food system

By Dylan

Every snowflake has a different form and size

My hypothesis is that every snowflake has a different form and size. I have been studying this hypothesis all term to try and prove this or disprove it. I have been researching my hypothesis for four weeks and this is the information and research I have found.

I have found out that nobody has yet proved that two snowflakes are identical and the way that I am planning to prove it is by bringing in some ice crystals (because I can’t bring in snowflakes as they will melt and ice crystals are close to snowflakes in form). I will bring a microscope for people to look through at the crystals and see that they all look different .The crystals all grow differently in size, speed, shape and strength.

I believe that every snowflake is different because every snowflake falls in a different way and falls in different places and at different times which makes them spin slower or faster. Most snowflakes look the same in size but they are totally different in shape and identity when you look at them more closely.

By Jonas

Type of information	Authors/http		Publisher/date/page/reference/place
Internet	www.aboutweather.com		13.8.09
Internet	www.wiikipedia.com		20.8.09
Internet	www.snowflakechemistry.com		4.9.09
Book	weather		Robin kerrob 18.9.09
book	The worlds weather		Michael Allaby

Forensic Science helps solve crimes

My
Hypothesis

My hypothesis: Forensic Science helps solve crimes.

I chose this because I wanted to do something different from everyone else and because I am interested in how people solve crimes.

Brain Storming

For my brainstorming I just wrote what I knew about Forensic Science.

I also wrote what I wanted to find out and what resources I can use to find that information.

I wrote about the FBI and what they do when they put someone in jail.

Mind Mapping

For my mind mapping I wrote all the main points that I decided to concentrate on.

Some of them were DNA, drugs, fibres, toxicology, finger-prints, pathology and so on…

Key Elements

For my Key Elements I did:

What sciences make up Forensic Science, where and how is it used and a real life crime.

Physics:

Bullet Trajectory: Can reveal the positions of the people involved.

Guns and ammunition: When a gun is fired, a powder will smudge the person who fired the gun or guns hands.

Blood Patterns:
Blood pattern analysis can provides crucial information about the sequence of events in a violent crime

Chemistry:

Fingerprints: Fingerprints are sometimes found on the victim or somewhere in the crime scene

Drugs: Killings can sometimes be over drugs and could also be the cause of death.

Fibres: Fibres that are found on the clothing of murder victims can give indications of the environment in which the victim last had contact with.

Toxicology: If the police have found a body that has been a victim of a murder they do tests on it to see how the victim died and to see if it has any evidence on it.

Biology:

Hair: Valuable DNA information can be found in hair.

DNA:
DNA can be of great value in identifying a person involved in a crime.

Where and how is it used?

Crime Scenes, pathology, suspects

Example of a real crime:

Suspects, evidence, pathologist report, conclusion

Record

Key Question 1: What Makes up Forensic Science?

Focus Points:

a) Physics

b) Chemistry

c) Biology

Information Source/ Bibliography

• Mum & Dad
  
• http://www.forensic.gov.uk (accessed 11/8/2009)
  

Key Question 2: How does Forensic Science help Solve Crimes?

Focus Points:

a) Crime Scene Evidence

b) DNA

c) Pathology

– Mum & Dad

– www.wikipedia.com (accessed on the 20/08/09)

How did I prove My Hypothesis?

1. First
I
looked at all the key elements and their focus points

2. I then went and researched all of the main key elements and points

3. I used the internet, spoke to my parents and borrowed a book from my friend

4. Then I got all the main information and put it together in a mind map

5. I then put the facts into my power point and started to prove my hypothesis

6. To prove my hypothesis I decided to make up a real crime and a crime scene

7. I then used all the elements of forensic science and applied it to the available evidence to solve the crime.

8. Without the use of forensic science the crime would never have been solved

Bibliography

Fibres that are found on the clothing of murder victims can give indications of the environment in which the victim last had contact with: http://www.forensic.gov.uk, Our Services, Fibres Paragraph 4

That is how I proved my hypothesis dna exists in all living human cells and is unique to each individual. This means that samples taken from a crime scene or an individual containing DNA can be of great value in identifying a person involved in a crime:

http://www.forensic.gov.uk, Our Services DNA Solutions Paragraph 3

By Phillip

Oxygen keeps a flame alight

Explanation

My hypothesis is ‘oxygen keeps a flame alight.’ Fire is the chemical reaction of combustion. Combustion is when the oxygen molecules meet the molecules of the thing being ignited. For combustion to occur it needs three things

1. A sufficient heat source,

2. A sufficient supply of oxygen and

3. A fuel.

Oxygen is not actually the fuel for the fire but rather the oxidants in the oxygen. When a big fire hits the open air it can result in an explosion. This would actually be just another reaction as more oxidants are pulled into the fire for fuel. Fire needs heat, when water is poured onto it all the heat goes out putting out the fire. Fire can be started by natural causes out in the open because there is oxygen everywhere. When lightning or lava meets an object the intense heat, plus lots of oxygen is supplied it can burst into flames.

Sand contains no oxygen; it is made of shells and sand. That is why if you put sand on fire it will go out.

If you were to send a torpedo into a fire it would go out, because the torpedo would rob the fire of its oxygen. The same is if you stood on a fire it would go out but mainly because you are shouldering the oxygen. Fire is heat and light with oxygen to keep it going.

This is my explanation on how ‘Oxygen keeps a flame alight.’

By Maddie

Stars produce light

I have been studying how stars produce light and how it affects us. The truth is that if we did not have stars we would die. The reason for this is that the sun is actually a star and if we did not have a sun we would die. The sun produces light and heat both of which are essential to human, animal and plant survival.

I have found out that the way stars produce light is through a process called Nuclear Fusion also sometimes known as Nuclear Burning. Nuclear Fusion is a series of nuclear reactions which happen when light elements come together. This produces heavier light elements which then have enough energy to produce light.

The way I am going to present this is by using a model of the sun in a box. The sun will be made out of a ball through which light can pass and once I have explained how stars produce light I will shine a torch inside the ball causing it to look like the sun.

By Jessica

source	Author/http	Web address	Place/date
internet		www.science news for kids.com	School/22nd of the 8th and 26th of the 8th
Mum/dad Answers.com yahoo answers		Answer.com www.yahoo answers	Home/21st of the 8th School/17th of the 9ht School/26th of the8th

HHO Gas!!!

 

HHO Gas

HHO gas is cleaner. You do not need big machines that pollute to get it. The only emissions that come out of the exhaust are water.

It is a renewable resource. It won’t run out. It is cheaper. It is easier to get unlike oil or petrol.

What I Have Learnt

I have learnt about all about HHO gas.

I have learnt about why it is called HHO not H2O gas. It is because you are separating the hydrogen from the oxygen

and then you use the hydrogen bit (which is not H2O).

I have learnt what HHO stands for. It stands for Hydrogen Hydrogen Oxygen or Oxyhydrogen.

I have learnt how HHO gas is produced. It is produced by electrolysing water to dissociate the 2 hydrogen and oxygen molecules.

I have learnt about what it is. It is the bubbles in water.

How it will power engines? It powers engines the same way as current fossil fuels.

It’s benefits to the environment. It doesn’t create fumes.

How it can save you money? It is easier to get than current fossil fuel which makes it cheaper.

 

 

Riley Mackillop

 

References:

Myself

My Dad

http://ezinearticles.com/?HHO-Gas&id=1494179

(All transferred into my own words).

 

 

 

 

 

 

 

 

 

Blisters from to protect the body

 

Callus		Blood blister	Air Blister	Water blister

 

 

 

 

Blisters form to protect the body

Blisters form as a source of protection to the body. They protect inner tissue underneath the skin.

Skin rises to form a blister which will make it harder for anything that tries to harm the body, get underneath the skin. The reason being, there is more skin to go through.

There are four different types of blisters; Calices – hardened blisters, blood blisters – blisters which contain blood, water blisters – blisters which contain water or H²o and air blisters – blisters which contain air. All of these blisters are very good sources of protection to the body.

The most common blisters are both the water blister and the air blister. The air blister is most commonly found on feet. These are caused if your shoes are too tight or too small for you, if your not used to them or if you walk in them for too long.

The water or H²o blister is most commonly found on hands. Gymnasts are generally the ones to have them because they spend most of their time swinging on bars.

Another common blister found on hands are calices, however these are not really referred to as blisters.

If you happen to get a blister and want to get rid of it, you have to wait a while and it will eventually go away.

If it is an air blister, these will take the shortest to get rid of, however if you have a calice, these will usually stick with you for a few years.

This piece of information should prove to you that blisters form to protect the body!!!

 

By: Kirsten

Remote controlled car operates by a remote and its parts

I have been exploring for information about the idea that a remote controlled car operates by a remote and its parts. To help me discover if my hypothesis is true, I broke the hypothesis into 2 key questions and put 3 focus points for each of those 2 key questions.

For the first key question (‘How does the remote send a signal to the car?’) I found out that the antenna on the cars remote sends a radio wave to the car to turn on and move in any direction that you choose it to. Another thing is that the antenna on the remote is also called a transmitter.

For the other key question (‘Why do they have springs and dampers in remote controlled cars?’) I found out that the springs and dampers keep the car together when the car is moving. I also found out that both the springs and the dampers make up the cars suspension.

Bibliography

• Expert (dad)
  
• Internet (http://electronics.howstuffworks.com/rc-toy.htm)
  
• Internet (http://auto.howtsuffworks.com/car-suspension1.htm)
  
• Book (‘Mighty Machines Cars’ by Chris Oxlade)
  

   

   

 

By William