• 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...


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.


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.


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. Plant Tropism Lab

    on March 16, the beans would have a sharp tilt right the next day, in doing so the stems become upright, showing that the stems grow against gravity. This is a display of negative gravitropism, plant stems/trunks grow against gravity and maintains its upright position.

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

    Germinating seeds process faster cellular respiration than non-germinating seeds because germinating seeds contain embryos that grow and process mitosis quickly. Although non-germinating seeds also have alive embryos, they are dormant. Since embryos of the non-germinating seeds are dormant, they do not require lots of energy to process mitosis.

  1. Biology Industrial Melanism of Peppered Moth Lab

    Processed Table 1. Calculations of the percentages of light-coloured moths and melanic moths left on light-coloured "tree bark". Trial Number Percentage of Melanic Moths (%) Percentage of Light-Coloured Moths (%) 1 43.3 56.7 2 36.7 63.3 3 23.3 96.7 4 10.0 90.0 5 3.3 96.7 Processed Table 2.

  2. Osmosis Lab

    The fifth and final set of results will contain 100 grams of salt in the beaker. 4. Stir the salt with a stirring rod until the salt completely dissolves. 5. Cut out 14cm of cellulose tubing with scissors. Cut out 5 of these, one for each beaker.

  1. Enzyme Lab

    The 100ml graduated cylinder placed upside down in the water basin contained a 100ml of water each time. In each test tube, 5ml of H2O2 was used. Liver "Disks" All our liver "disks" that we used we all the same, and constant.

  2. Simpson Diversity Lab

    + 2�1 = 17 � 4 - Clovers = 8 � 1 - Crab Grass = 2 � 1 - TOTAL SPECIES (in 10m2 area of all quadrats) : 251 � 34 Count of species with respect to entire field: Dandelions: x = 18560 dandelions � 6368 dandelions Uncertainty: =

  1. cell theory summary

    This example shows a plant cell. The scale bar indicates the length of 10 microns = 10um Notice that 10 um is about the vertical length of the diameter of the nucleus. All other measurements from the image are made relative to this scale bar.

  2. Biology Extended Essay 2009

    Referring to Appendix A, the highest price of orange juice is $4.99/2L, for freshly squeezed juice it will cost approximately three times as expensive to produce equal amount of juice. It is also more convenient to buy them from local supermarket than making your own juice.

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