• 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

# Sweating and heat loss

Extracts from this document...

Introduction

Sweating and heat loss (Adhal Mahmood) Aim To find out whether heat is lost faster over a sweaty body compared to a dry body. Apparatus 2 Boiling tubes 47ml max 2 Measuring jug 50ml max A Beaker 250ml max 2 thermometers Paper towels A kettle to boil water A stopwatch 2 magnifying glasses (8x) 2 corks with a small hole through the centre A test tube rack Preliminary work In my preliminary work, I need to find out how much water to use, whether the tissue should be wet with hot/cold water, how often the readings should be taken, how accurate should the readings be, how many readings should be taken and what my starting temperature should be. My results are as follows. Starting temperature of 40�c Time (secs) Wet towel (�c) Dry towel (�c) 30 36 38.9 60 35 38.5 90 34 37.9 120 33.9 37.5 150 33 37 180 32.6 36.9 210 32.3 36.8 240 31 36.5 270 30.4 36 300 30.3 35.9 Starting temperature of 65�c Time (secs) Wet towel (�c) Dry towel (�c) 30 51.1 53 60 48.2 51.9 90 46.4 51 120 46 50 150 44.3 49 180 42.9 48.4 210 42.6 46.9 240 41.7 48 270 40.2 47.5 300 39.3 47 Starting temperature of 60�c Time (secs) ...read more.

Middle

I will keep everything else the same throughout the experiment so that I can obtain reliable results. If I don't keep the starting temperature the same, then in one of the experiments there will be a larger gradient for the water to cool down in and so this will make my results void. If I don't keep the amount of water in each tube the same then in one experiment the cooling down process will be longer than the other and will also make my results void. If I don't keep the size of the test tubes the same then in one experiment there may be more surface area of water exposed than in another, so one of the experiments will cool down faster then the other. This would make my results void. If I don't keep the material of the bungs the same, then in one experiment I may have a rubber bung and in a different experiment I may have a cork. The rubber bung is a much better insulator and so this will let less heat out than the cork. This will make my results void. ...read more.

Conclusion

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. ## To measure heat loss in two test tubes which represent bodies, one which sweats ...

3 star(s)

Temp. in dry Test tube (OC) Temp. in wet test tube (0C) 0 72 65 1 71 63 2 70 57 3 69 52 4 67 50 5 66 47 6 65 44 7 64 42 8 63 40 9 62 39 10 61 37 11 60 36 12 59 35 13 58 34 14 57 33

2. ## I am trying to find out if sweating helps the body to cool down.

I will take the temperature exactly every 30 seconds. The amount of water used on the wet paper towel for when I repeat the experiment. Repeat the experiment and take averages. Firstly I will wet one of the paper towels with 50ml of water.

1. ## How the increase in clothes on a body prevents heat loss.

I predict my graph will look like the following because it's more likely the insulated body will maintain the heat longer. Preliminary In the very first lesson we had with the equipment, we worked to justify our method. This experiment helped us decide on the measurements we take and the procedure in which we carry out the experiment.

2. ## Investigation finding whether sweating increases the rate at which the body cools.

Wrap the dry towel, ensuring it does not get wet, around the other test tube. * Add 20ml of 70?c water into each test tube. Beware, this water is hot and may burn. If heating using a kettle, use kettle safety instructions.

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