• 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
6. 6
6
7. 7
7
8. 8
8

# The Rate of Heat Loss

Extracts from this document...

Introduction

Nicole Ryan The Rate of Heat Loss Introduction My investigation is to find out the main method at which a liquid cools. When a liquid cools down, it loses heat in four ways: * Conduction * Convection * Evaporation * Radiation Aim MY aim is to investigate which method of heat loss is mainly responsible for a cooling a liquid down by changing the main method of heat loss and measuring the cooling rate. Prediction Heat is generally transferred by conduction, convection, evaporation and radiation. All these processes can all happen simultaneously, but it is likely that one will give the greater heat exchange. Below is a description of the processes that will affect my experiment. Conduction This is where heat energy passes through the walls of the can by making the particles of the can vibrate and then they will make the particles next to them vibrate causing the heat to pass through the walls of the can and out to the surroundings. Materials that are good thermal conductors tend to be good electrical conductors; metals such as gold, silver and copper have high thermal conductivity's and will conduct heat readily. ...read more.

Middle

If I use a lid this could slow down this process. As the water vapour will not be able to escape into the air as quickly as it would normally keeping the heat in for longer. Factors There are many factors, which can affect my experiment. They are: 1. If a lid is used There will be a great difference in the speed of heat loss if I use a lid. This is because a large amount of heat will escape from the top of the can by convection and evaporation. Therefore if I use a lid it will slow down these processes. 2. Volume of water used When the volume of water is higher, it will stay warmer for longer than if there was a low volume of water. This is because when there is a high volume of water then the outside of the water will cool down, but the inside will stay warm. 3. If the can is insulated If the can that the water is in is insulated then it will stay warmer then if the can is not insulated. ...read more.

Conclusion

1st Attempt (Degrees Celsius) 2nd Attempt (Degrees Celsius) Average (Degrees Celsius) 2 80 81 80.5 4 78 78 78 6 76 77 76.5 8 75 76 75.5 10 74 75 74.5 12 73 74 73.5 14 72 73 72.5 16 71 72 71.5 18 70 71 70.5 20 69 70 69.5 Starting Temp: 83 Conduction TIME (Minutes) 1st Attempt (Degrees Celsius) 2nd Attempt (Degrees Celsius) Average (Degrees Celsius) 2 66 62 64.5 4 63 60 61 6 60 58 59 8 58 56 57 10 56 54 55 12 54 53 53.5 14 52 51 51.5 16 50 50 50 18 48 48 48 20 47 46 46.5 Starting Temp : 67 Convection TIME (Minutes) 1st Attempt (Degrees Celsius) 2nd Attempt (Degrees Celsius) Average (Degrees Celsius) 2 69 70 69.5 4 65 68 66.5 6 61 65 63 8 58 63 60.5 10 56 60 58 12 54 59 56.5 14 52 56 53.5 16 49 52 50.5 18 48 48 48 20 45 46 45.5 Starting Temp: 73 Conclusion From looking at the graph and results table I conclude that convection is the main method at which a liquid cools. ?? ?? ?? ?? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms 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

# Related GCSE Green Plants as Organisms essays

1. ## My investigation is to find out the rate of which heat transfer happens. Heat ...

Prediction: I predict that these factors will affect the out come of my experiment. * Size of Container * Different Materials * Different Substances * Surface Area * Thickness and density * Colour of Container * Volume of water * If a lid is used * If the Container is

2. ## An Investigation into Water Loss from Plants.

This is because leaves weighing different amounts will have different amounts of water to lose.

1. ## Determine which materials make the best insulators and determine the factors affecting heat loss ...

the air in the bubbles would stop the heat from leaving the container. It is very much like a double-glazed window. - Type of Container: The bigger the container the more the heat loss because there will be more space for the water to evaporate from.

2. ## The Loss of the Aral Sea

directly linked to the low levels of the sea (high salinity level) and also the chemical residues that are being used for irrigation; they are washed into the sea and rivers from the farms upstream. Because of the old irrigation networks that are being used, there is a very high

1. ## Investigation to discover which variable prevents the least amount of heat loss through convection, ...

Gases are poor at transferring energy in this way because the molecules are relatively far apart, compared to a solid or liquid. The more energetic molecules in part of a gas that has been heated travel large distances, in molecular terms, between collisions and so it takes them longer to transfer energy to other molecules.

2. ## In this investigation I will investigate heat loss and heat transfer in different materials ...

Different types of material insulate differently depending on how efficiently the material prevents heat loss. For example, if I use a good insulator it will stay warmer than a poor insulator that doesn't insulate effectively. If you include insulation around the beaker it will stay warmer for longer.

1. ## Discover which variable prevents the most amount of heat loss through convection, conduction and ...

Also the nappy will slow down radiation. However, I do think that the foil will prevent heat loss successfully. Foil reflects better than all the other materials in my experiment. This is because it is fairly light in colour and shiny.

2. ## An experiment to investigate the effect of increasing the volume of sweat on heat ...

Prediction I predict that the higher the volume of 'sweat' we put on the kitchen towel surrounding the boiling tube, the less time it will take to cool down to room temperature. This is because the higher the amount of sweat on the boiling tube the more heat energy is required for it to evaporate.

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