• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5

# My aim is to find out which material is the best insulator out of Black paper, Bubble rap, Foil and Cotton wool.

Extracts from this document...

Introduction

Hamid Azizi 10x1                                                                   Science Coursework pg

## Planning

My aim is to find out which material is the best insulator out of Black paper, Bubble rap, Foil and Cotton wool.

Prediction

I would predict that Foil will be the best insulator then bubble rap next cotton wool and lastly it will be black paper.

I think foil will be the best insulator because its shiny and because of that, the heat that tries to escape will be reflected back by radiation. Bubble rap will probably be the second best insulator because its like double-glazing windows it has air between the plastic to prevent conduction and radiation.

I think then it would be cotton wool because I think the hot air might escape through it.

I think Black paper will be the worst insulator because its black and the heat will be absorbed and lost by radiation.

Equipment

These are the equipment that I will need and use in my experiment. I will need a beaker to warm up the water up to 75 degrees, a measuring cylinder to measure 100 ml of water, a thermometer to be able

Middle

I noticed in my results that for cotton wool and foil the temperature only went down 1 or 2 degrees every two minutes but for bubble rap and black paper it lost 5 or 6 degrees each time.

 Best insulator My prediction My results 1st Foil Cotton wool 2nd Bubble rap Foil 3rd Cotton wool Bubble rap 4th Black paper Black paper

As you can see my prediction wasn’t really correct according to my results because of cotton wool, I thought that its going to loose heat by the hot air going through it, but the air cant just travel through it because it’s a solid.

Heat Transfer

###### Heat energy causes molecules in gases and

Conclusion

Something that really contributed in my results was the room temperature because I did the experiment in a period f two days. The temperature might have been lower in the second day and that might have caused the temperature in the beaker to come down quicker. Next time I will hopefully try to finish the experiment in one day. When I did my experiment I covered the whole beaker with the material to make a fair test, but I didn’t cover the bottom of the beaker. I know that heat rises but their still could be some heat lost from the bottom of the beaker.

I think my results were not enough to make a firm conclusion because the first try of the experiment was very inaccurate so my average results didn’t come out very accurate.

I can extend my work by taking the temperature every one-minute and doing that for a longer period of time. I can also try out different materials or even possibly doing a combination of two different materials together.

This student written piece of work is one of many that can be found in our GCSE Radioactivity section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

1. ## As part of my AS physics coursework I went on a trip to Queen ...

4 star(s)

How the Procedure is Performed A radiopharmaceutical is usually given intravenously, into a vein. Depending on the type of scan the imaging can be immediate, a few hours later or even several days after the injection. The imaging times vary from 20 to 45 minutes.

2. ## Is Sumbathing Good For You?

How the Skin Tans... Our natural skin colour is determined by skin pigment also known as melanin. When our skin is exposed to UV, cells deep in our skin begin a process where more melanin is produced. The cells turn brown and rise to the skins surface producing a tan.

1. ## Investigate how the material of a cup affects the time it takes for the ...

Nevertheless, I already know from textbooks etc that the thermal conductivity values for the materials I will be using are as follows: * Aluminium: 238 W/m.k * Ceramic: 226-284 W/m.k * Paper: 0.1-0.4 W/m.k * Polystyrene: 0.122-0.193 W/m.k This shows that polystyrene is a better insulator than paper because it

2. ## Thermal Insulation

Insulation from convection Convection is transfer of heat when a fluid is in motion. Since air and water do not readily conduct heat, they often transfer heat (or cold) through their motion. A fan-driven furnace is an example of this.

1. ## Radiation: are mobile phones unsafe? Mobiles use electromagnetic radiation in order to send and ...

http://info.cancerresearchuk.org/healthyliving/cancercontroversies/mobilephones/ This is yet another piece of evidence for microwave radiation being too low to cause damage. If the radiation levels were high enough to cause harm, we would have seen a much greater increase in the amount of people with brain cancer since mobile phones had first been introduced.

2. ## The aim of this study is to find out how harmful sunbeds are for ...

It was formed in 1995 hoping to promote good practice in the industry.4 The association has found that ; 7% of the uk's adults use a sunbed, that's equal to 3million people. 70% of people want to be tanned and 38% only use the sunbed as a pre holiday tan.

1. ## Heat Loss in Coffee.

This is how heat energy is passed on from one particle to the next. Good conductors are metals such as gold, silver and glass. A glass beaker can be safety heated on a gauze because a gauze conducts heat away from a flame.

2. ## An investigation to find out which material reduces heat loss the best way in ...

In radiation every object sends out infrared radiation, which is part of the electromagnet spectrum. Hot objects send out more infrared than cold objects. Infrared radiation is reflected by shiny surfaces absorbed by black and rough surfaces and can pass through transparent materials through a vacuum.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to