Green Things Lab
Objectives:
To determine the difference between a qualitative and quantitative observation
To make 3 qualitative and 3 quantitative observations of an item
To identify an object using qualitative and quantitative observations
Materials:6 different green items, balance/scale, string, ruler, magnifying glass
Procedure:
1. You will be using a data table to collect observations about each of your green items.
2. Choose a green specimen and record its name on your data table.
3. Determine 3 qualitative observations of the specimen and record them on your table.
4. Determine 3 quantitative observations of the specimen and record them on your table.
5. Remember: quantitative observations MUST include units of measurement or you willreceive no points.
6. Repeat steps 2-5 until you have gone through each of your 6 green things.
Green Things Lab
Objectives:
To determine the difference between a qualitative and quantitative observation
To make 3 qualitative and 3 quantitative observations of an item
To identify an object using qualitative and quantitative observations
Materials:6 different green items, balance/scale, string, ruler, magnifying glass
Procedure:
1. You will be using a data table to collect observations about each of your green items.
2. Choose a green specimen and record its name on your data table.
3. Determine 3 qualitative observations of the specimen and record them on your table.
4. Determine 3 quantitative observations of the specimen and record them on your table.
5. Remember: quantitative observations MUST include units of measurement or you willreceive no points.
6. Repeat steps 2-5 until you have gone through each of your 6 green things.
Green Things LabName(s):
Results:
Item / Qualitative measurement / Quantitative measurement1.** / 1. / 1.
2. / 2.
3. / 3.
2. ** / 1. / 1.
2. / 2.
3. / 3.
3. ** / 1. / 1.
2. / 2.
3. / 3.
4. ** / 1. / 1.
2. / 2.
3. / 3.
5.** / 1. / 1.
2. / 2.
3. / 3.
6.** / 1. / 1.
2. / 2.
3. / 3.
Discussion Questions:
1. What is a qualitative description? Give an example.
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2. What is a quantitative description? Give an example.
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3. Which type of measurement is easier to make? Why?
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4. If this lab was repeated, which descriptors would be better (qualitative or quantitative)? Why?
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5. Were mistakes made when the specimens were qualitatively and quantitatively identified? Why?
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6. How do these mistakes compare with mistakes made in collecting data for a “real” lab?
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How could you avoid these mistakes?
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7. List 3 things that these samples have in common (other than being green).
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8. Identify the following as either A= qualitative or B= quantitative
a. The rose was red. **
b. The stem on the flower was 13 cm long. **
c. The potato weighed 6 grams. **
d. Water freezes at 0C. **
e. The peanut shell was rigid. **
f. The apple was mushy. **
g. The watermelon contains 1 liter of water. **
h. The bug looked dead. **
i. The butterfly had four separate wings. **
9. Write 4 qualitative and 4 quantitative descriptors to describe your group.
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