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

Radioactive Lab

Extracts from this document...

Introduction

Radioactive Lab Data: 100 Pennies Number Of Trial Amount Of Pennies Left 1 47 2 21 3 16 4 7 5 5 6 3 7 2 8 0 10 Pennies, 1 Minute Number Of Trial Amount Of Pennies Left 1 3 2 6 3 0 4 1 Graphs: Conclusion: Radiometric dating attempts to use the constant decay of radioactive substances as a way to measure the age of rocks and minerals. Scientists attempt to deduce time for events in the past, using the presently determined rate of disintegration of unstable forms of atoms. The techniques are varied and complex. The methods involve a number of assumptions with varying degrees of certainty. ...read more.

Middle

The shaking of the cup is random and which pennies come up heads is also random. What can be predicted is the amount of pennies that will decay. For each trial the amount of decayed pennies should decrease by half. The experiment achieved the radioactive decay curve. The amount of pennies that decayed weren't exactly half, but it was close enough to see the curve and make the theory valid. From comparing my data with other teams in the room the results were very similar. I performed a T-test with my experiment and one other group. With a P-value of 0.9678 the difference is not significant. I found research online using 50 M&Ms. ...read more.

Conclusion

There was also a radioactive decay curve making the results more valid. In order to change the procedure I would increase the sample size to see if there was a blind error in the theory making the power of the experiment increase. I would increase the number of pennies to 200 and record my results. Then repeat the same experiment twice so I could perform a T-test to see how significant the results would be. To improve this investigation I would use the knowledge from this lab you find the relative age of rocks. Give students a Half Life graph of a compound to see if they can figure out the ages. For example half life of U-235 graphed. This way the class can try to figure out the radiometric ages of different rocks. ...read more.

The above preview is unformatted text

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

  1. Biology Industrial Melanism of Peppered Moth Lab

    Mean and standard deviation of dark-coloured "tree bark" Trial Mean Percentage Of Melanic Moth (%) S.D of Melanic Moths Mean Percentage Of Light-Coloured Moth (%) S.D of Light-Coloured Moths 1 61.3 7.30 38.7 7.30 2 64.7 12.16 35.3 12.16 3 74.7 11.93 25.3 11.93 4 86.7 12.69 13.3 12.69 5 88.0 8.37 12.0 8.37 Processed Table 19.

  2. Plant Tropism Lab

    Degrees to the right (�) March 11 March 12 March 15 March 16 March 17 March 18 M-1 - - - - - - M-2 - - - - - - M-3 - - - - - - M-4 - - - - - 80 M-5 - - - -

  1. Biology Extended Essay 2009

    Therefore, ascorbic acid is however, very stable if kept in a vacuum deaerated condition. Excess intake of vitamin C can easily leads to symptoms like diarrhea.7 2.1.2 Flavonoid In most freshly squeezed orange juice contains pulp from the orange that has not been extracted from the juice.

  2. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    2: The volume of oxygen consumption in each 1.0 ml pipettes in ice water. The differences are calculated by subtracting final value from the initial value. The actual differences are calculated by subtracting the differences in control from the differences in germinating/non-germinating seeds.

  1. Enzyme Lab

    = amount of water added to the value ? Dependent Variable The rate of enzyme-catalyzed reaction will be observed by measuring how much water is displaced from the 100ml graduated cylinder. This measurement will determine how the concentration of the substrate affects the rate of enzyme-catalyzed reaction.

  2. Protein Purification Lab

    Based on those factors and research about the macromolecule content in solid proteins which will be tested, I predict that boiled egg will have the highest protein digestion rate and mixed nuts will have the lowest protein digestion rate.

  1. Osmosis Lab

    Dependent Variable The rate of osmosis will be observed by weighing the initial mass of the cellulose bags, and then the "final" mass after the 24-hour period inside the beaker. This difference in mass will determine how the concentration of salt affects the rate at which osmosis takes place.

  2. Simpson Diversity Lab

    2 - 12 dandelions (� 2) - 8 unknown (� 1) 3 - 10 dandelions (� 2) - 3 unknown (� 1) 4 - 13 dandelions (� 2) - 8 plantain (� 2) 5 - 4 dandelions (� 1) - 2 unknown (� 1) 6 - 16 dandelions (� 2)

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