Name: ___________________________
Per:_____
Mini-Experiments Packet Revisited
Directions: Re-read experiments 2 and 3 from the miniexperiments packet. Create mini-posters for each on the
provided pages. Data for each experiment is provided.
You need to create a data table and a graph for each one
and based on the data draw a conclusion. Use my miniposter for experiment 1 as a guide for how to do your own.
Data for Experiment 1:
The samples treated with plain air had the following amounts of
algae growing in each beaker; .89 grams, .75 grams, .62 grams, .88
grams, 1.02 grams, .78 grams, .94 grams, 1.33 grams, .76 grams, 1.01
grams. The samples treated with oxygen had the following amounts
of algae growing in each beaker: 2.01 grams, .85 grams, .72 grams,
1.04 grams, 1.44 grams, .86 grams, .89 grams, 1.38 grams.
Data for Experiment 2: Stretching Strength
The nylon cord was stretched 1.2 cm. The diameter was 2.1 cm
smaller. The cotton cord broke and the two pieces measured the
same length as before and the diameter was the same. The rubber
cord stretched by 11.7 cm and the diameter shrank by 1.3 cm. The
polyester cord stretched by .5 cm and the diameter was .25 cm
smaller.
Data for Experiment 3: Freezing Hot Water
The water in the 100 degree Celsius beaker showed ice crystals forming after
2minutes and 12 seconds. The water in the 80 degree Celsius beaker showed ice
crystals forming after 2 minutes and 52 seconds. The water in the 60 degree
Celsius beaker showed ice crystals forming after 3 minutes and 66 seconds. The
water in the 40 degree Celsius beaker showed ice crystals forming after 2 minutes
and 10 seconds. The water in the 20 degree Celsius beaker showed ice crystals
forming after 2 minutes and 31 seconds.
Comparison of Algal Growth in Oxygenated Water and
Regular Water
Question:
Does changing the amount of oxygen dissolved in pond water change
the amount of algae that will grow in it?
Hypothesis: Oxygen enriched pond water will grow more algae than
pond water that is not oxygen enriched.
Rationale: Oxygen is a necessary life-giving resource which will help the
algae grow faster and bigger.
Procedures:
Data:
Comparison of Algal Growth in Oxygenated Water and
Regular Water
Grams of Algae Growing in Air
Treated Samples
.89 grams
.75 grams
.62 grams
.88 grams
1.02 grams
.78 grams
.94 grams
1.33 grams
.76 grams
1.01 grams
Grams of Algae Growing in
Oxygen Treated Samples
2.01 grams
.85 grams
.72 grams
1.04 grams
1.44 grams
.86 grams
1.11 grams
.86 grams
.89 grams
1.38 grams
Comparison of Algal Growth in Oxygenated Water and
Regular Water
1.2
1
0.8
0.6
0.4
0.2
0
Air Treated
Oxygen Treated