• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigation on Heat Loss in Organisms.

Extracts from this document...

Introduction

Investigation on Heat Loss in Organisms Introduction: Heat loss is extremely important for all types of organism is any habitat. The temperature of the body has to be correct otherwise the organism will not be able to survive, so it is vital that organisms can control factors to keep their body temperature at a safe, constant temperature. Heat loss is so vital because it can easily kill an organism its temperature rises or decreases by a certain amount, which could easily happen under the worlds varying climate. In a cold habitat, obviously there is not a lot of heat to be gained outside, so the heat inside the body of an organism has to be kept by other methods, to keep the body temperature constant and at a safe temperature. One method, is having a layer of fat to maintain the heat already inside their bodies. However, a more important and influential fact, is that in cold places such as the Arctic, you tend to only find large animals, such as Polar Bears, and Penguins, with the smallest organisms being Arctic Foxes. ...read more.

Middle

Volume - Depending on how much heat is stored inside the organism, will affect how much heat is lost from that organism. Surface area - The amount of skin per cm3 of skin decides how easily the heat is lost from the organism - the greater the amount of skin per cm3 of skin, the easier the heat loss for that organism. Aim: In this investigation, I will be investigating the heat loss of a certain volume of water inside a test tube. Here is a table of all the variable and how I will control them: Variable Method of Control Independent Variable Volume The water in all test tubes shall be measured accurately in a measuring cylinder before being placed inside the test tube. Dependant Variable Heat Loss Measured every minute using a stopwatch to take accurate measurements. Controlled Variables Surface Area Starting Temperature Room Temperature All test tubes will be the same size, and the water in every test tube will start at a certain temperature to give the water in each test tube time to settle inside the test tube, which will all be placed inside the same room. ...read more.

Conclusion

When the temperature of the water lowered to 70 oC, the stopwatch was started, and the experiment for that test tube had begun. Every thirty seconds, the temperature of the water was recorded, until the experiment had been running for 10 minutes, when the final temperature was recorded. This was repeated for the water inside the other five test tubes, so that the six volumes of water inside the test tubes were 10, 15, 20, 25, 30, and 35cm3, with the stopwatch starting when they lowered 70 oC, and the temperature recorded every thirty seconds for ten minutes. All the experiments were done inside the same room, so that the room temperature remained the same for all experiments, and the measuring cylinder was used to measure out exactly the correct volume of water for each test tube. The final results were recorded, and the equipment was packed away. Apparatus used: Here is a list of all the apparatus used in this investigation: Six, equally sized boiling tubes A thermometer Test tube rack Kettle ( to boil the water ) A stopwatch A measuring cylinder ...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

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Marked by a teacher

    An investigation into the relationship between heat loss and surface area to volume ratio

    3 star(s)

    I will heat to 100�C then time for 200 seconds while recording the temperature at every tenth second interval. The safety for the heating procedure is simple. I will be using a beaker so, unlike in my preliminary work, the water doesn't have the potential to shoot out of the end.

  2. Photosynthesis Investigation

    Here the leaves that are halfly covered by the aluminium foil will not receive any sunlight but those areas next to the aluminium foil, which are not covered, will gain sunlight and will start to photosynthesis again. Apparatus Required Equipments - 2 large, 2 small beakers - Bunsen burner -

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

    we thought 30seconds was sufficient enough, this wasn't neither too quick or too slow. And it also gave us enough time to check if the surrounding temperature was still at 5 C. The preliminary work helped us justify our use of times and equipment with the most appropriate behaviour.

  2. An Investigation into Water Loss from Plants.

    shade therefore while air can still reach it for gaseous exchange the leaf is slightly cooler and so less water will be lost. This reduces the risk of the plant from losing too much water and becoming dehydrated. Prediction Based on the preliminary experiment and scientific knowledge above I hypothesise

  1. Investigating Heat Loss in Model Animals

    * C is wrapped in four layers of insulation; * D is wrapped in six layers of insulation; * E is wrapped in eight layers of insulation. The test tubes are then carefully filled with 20 cm� of water at (or as near as possible to)

  2. Heat loss in Emperor Penguins.

    a huddle, the less surface area exposed to the air per penguin. In my control experiment, with 1 beaker, the entire surface is exposed, meaning that more heat can be lost by convection, cooling the water faster. In Huddle I, each beaker is in contact with at least 3 others,

  1. An Investigation into Species Diversity with distance along a Pingo.

    Where the soil is thin and water scarce, the vegetation will adapt to reduce water loss by transpiration. Transpiration occurs from the plant leaves to the air. The walls of the mesophyll are wet; some of this water evaporates into the air spaces in the mesophyll layer until they are saturated.

  2. Yeast Investigation

    and environments and acidity and alkali being one of these environmental surroundings, which could affect yeast. I looked at all the variables that I have thought would change the way that the yeast will respire and react to. I finally decided to choose the temperature as my variable this is

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