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

The aim of this experiment is to find out if a steaming cup of coffee stays warm longer when leaving it untouched, or pouring cold milk into it

Extracts from this document...

Introduction

Experiment 16: Coffee and Milk

Aim

The aim of this experiment is to find out if a steaming cup of coffee stays warm longer when leaving it untouched, or pouring cold milk into it

Theory

Physics informs us that large quantities of liquid take longer to cool than smaller quantities. Since there are more molecules in a larger quantity of liquid it may take longer to heat, but once the molecules are heated they take longer to cool down than a smaller quantity of water. Therefore I expect the beaker where the milk has been added straight away to have a higher temperature

Apparatus

  • 2 measuring cylinders
  • Bunsen burner
  • 2 thermometers
  • Stirring rods
  • A larger beaker
  • Tripod
  • Coffee powder
  • Cold milk
  • Water

Procedure

  1. First of all the coffee has to be made.
...read more.

Middle

Mean

Amount Of Coffee ± 0.05cm3

150.00

130.00

140.00

150.00

130.00

140.00

Amount Of Milk ± 0.05cm3

15.00

25.00

20.00

15.00

25.00

20.00

Temp. Of Coffee ± 0.05°C

100.00

100.00

100.00

100.00

100.00

100.00

...read more.

Conclusion

Conclusion

As the table of results shows; the beaker in which the milk was poured right after the coffee was added (beaker A), meaning it contained more liquid during the procedure of going up to the door and back, did indeed stay warmer. Beaker A was, on average, 1.50°C warmer than Beaker B. This supports my expectations and I conclude the experiment as being successful. Therefore the best option would be to pour the milk before attending to the door, especially if it would take a longer period of time to deal with the person at the door.

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics 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 International Baccalaureate Physics essays

  1. An experiment to find the Resistivity of Pencil leads in different degree of hardness

    The temperature of the pencil lead will affect the resistance. It is especially important that this remains the same as materials that are ohmic resistors, at high temperatures, can change the characteristic of the material (no longer an ohmic resistor).

  2. Motion of Hollow Cylinders

    It is also dependent on the relative roughness of the surface. Surfaces when examined microscopically show irregular features that consist of numerous bumps and depressions (see Figure 2 below). This contouring causes surfaces to interlock and impedes movement. The coefficient of static friction (µ), is a measure of the relative roughness between the surfaces (Myers, 2006; p.46).

  1. Thermal Properties of Liquids

    through certain measures that other variables are kept constant all throughout the experiment to establish a reasonable, accurate and precise analysis. These will be my controlled variables. Below is a list of the measures I will take. * Although I will change liquids through my investigation, I will control the volume of the liquids I will use.

  2. Design a procedure to test a factor(s) that affects a falling coffee filter and ...

    At this point, the speed becomes constant (acceleration is zero from Newton's 2nd law). We call this speed the terminal speed for the object. This lab will investigate force of air resistance acting on a falling coffee filter. Because of the large surface area and low density of these filters, they reach terminal speed soon after being released.

  1. How does the number of holes in a plastic cup affect the time it ...

    Another control of this experiment would be using the same stopwatch to time the drainage time and graduated cylinder to measure the water each time. Another control variable would be using the same amount of water (50 mL ± 2 mL)

  2. HL Physics Revision Notes

    combined to form pV/T = constant The constant will depend on the number of molecules in the gas PV=nRT Where R = molar gas constant = 8.314 J mol-1 K-1 Difference between ideal gases and real gases: Ideal gases follow the gas laws for all values of p, V and

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