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

Investigating How The Index Of Refraction Is Affected By Different Temperatures Of Water

Extracts from this document...

Introduction

Investigating How The Index Of Refraction Is Affected By Different Temperatures Of Water

Purpose
        The purpose of this lab is figure out how the different substances in which we are experimenting affect the index of refraction. In our experiment, we will make 3 replications of regular tap water at (36 °C), hot water at (63 °C) and cold water at (4.5°C) change in the index of refraction.

Hypothesis

        My hypothesis for this lab was, that the boiling water would have the highest index of refraction. Therefore the ice water would have the lowest. My predictions are based on my climate knowledge where I know that warmer an object gets its molecules move faster. And I believe faster moving molecules is more likely to achieve higher index of refraction.

Variables

        Independent variable: The independent variables that we will be using in this lab are the different temperatures of water that are being pored into the Plexiglas then be placed in front of the light source.

        

...read more.

Middle

 / sin R for the 20°, 30°, and 40° incident angles,  you then must calculate the average of the 3 sin i /Sin R for each of the data tables .

5)When you finish use the recorded results to create a bar graph to record data on the average index of refraction for each of the different tables.

Results

Qualitative Results:

        During the lab, one thing we noticed was that as the ray passed through the Plexiglas filled with water, the ray of was slightly bended and then on the refracted side the ray would be in a different angle each time.

Data Tables:

Table 1 :Incident angle, refracted angle, sin for the incident and refracted ray, and index of refraction for theCold Water( 4.5°C)

Incident angle

(∠i)

Refracted angle

(∠R)

sin (i

sin(R

Index of Refraction

20°

 14°

0.342020143

0.241921895

1.413762663

40°

29°

0.642787609

0.48480962

1.325855723

60°

41.50°

0.866025403

0.662620048

1.306971327

Table 2:  

...read more.

Conclusion


        Another limitation that we had in our lab was the lights in the room. the light in the room affected our refracted results due to the fact the beam was not clear enough to see in which we couldn't take accurate results.

Improving the Investigation:

        We could improve our investigation by somehow maintaining the temperature that was originally suppose to be of the water and somehow not let the room temperature interfere with the temperature of the cold and hot water temperatures.

        We could also improve the investigation by doing it in a very dark room with no lights on apart from the ray box. this would make it much easier to read the refracted ray and allowing us to make accurate results.

          We can also somehow make to results more accurate if we had a more stronger beam in which the light refracted would be much more visible more accurate.

...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. The Refraction of Light Lab

    Results: The following table shows the results obtained after graphing the lines on the provided angle graph paper (See the attached graph sheet to understand method). Table 1. Light going from air into water Trial # angle of incidence (i)

  2. Finding the Index Of Refraction

    Trials Sin(Angle of Incidence) � 0.04 Sin(Angle of Refraction) � 0.04 1 0.34 0.28 2 0.39 0.33 3 0.47 0.39 4 0.60 0.50 5 0.68 0.57 6 0.74 0.67 7 0.77 0.66 8 0.84 0.72 Uncertainty calculated by taking the range of highest possible values to lowest possible angle values and taking their average which resulted in � 0.04

  1. Index of Refraction lab

    The materials that would be required is - a light source, a plexiglass, a graph paper which tells the angle. Procedure: 1. Obtain all the materials and set it up as shown in the above diagram. 2. Keep the light source 1cm away from the start of the graph paper

  2. HL Physics Revision Notes

    Linear magnification ? The ratio between the size (height) of the image and the size (height) of the object. It has no units Linear magnification = image size/object size Define the power of a convex lens and the dioptre The power is the reciprocal of the focal length.

  1. Light Intensity Investigation

    193.3 238.4 70 198.6 134.3 134.5 155.8 80 89.62 96.13 102.5 96.12 90 70.5 70.6 76.9 72.67 100 54.67 51.27 64.09 56.68 DATA PROCESSING Graph: I think the best kind of graph to use to display these results would be to create a line graph: DISCUSSION Our results show a wide range of relationships between the data.

  2. Researching water turbine designs.

    This simple design makes it cheap and easy to repair in case of runner brakes due to the important mechanical stresses. The Cross-flow turbines have low efficiency compared to other turbines and the important loss of head due to the clearance between the runner and the downstream level should be taken into consideration when dealing with low and medium heads.

  1. In this experiment, a mechanism is prepared to observe the refraction of light and ...

    That?s why slope of the graph vs gives the approximate value of refractive index of water . Figure : Graph of vs Since is proportional to , the graph which is given above is linear. According to the graph above, slope of best fit line gives the experimental value of

  2. Gamma Rays

    Molecules that contain very short-lived isotopes are used as tracers to study the distribution of the molecules within the body. Due to the sensitivity with which radiation is detected, only minute quantities of the chemical are required. This information is used for both diagnostic and research purposes.

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