1. A study is being done to test the affects of habitat space onthe size of fish populations. Different sized aquariums are set upwith six goldfish in each one. Over a period of six months, thefish are fed the same type and amount of food. The aquariums areequally maintained and cleaned throughout the experiment. Thetemperature of the water is kept constant. At the end of theexperiment the number of surviving fish are surveryed
A. Independent Variable:
B. Dependent Variable:
C. Controlled Variables/Constants:
D. Experimental Controls/ Control Groups:
2. To determine if the type of agar affects bacterial growth, ascientist cultures E. coli on four different types of agar. Fivepetri dishes are set up to collect results:
- One with nutrient agar and E. coli
- One with mannitol-salt agar and E. coli
- One with MacConkey agar and E. coli
- One with LB agar and E. coli
- One with nutrient agar but NO E. coli
All petri dishes received the same volume of agar, and were thesame shape and size. During the experiment, the temperature atwhich the petri dishes were stored, and at the air quality remainedthe same. After one week the amount of bacterial growth wasmeasured.
A. Independent Variable:
B. Dependent Variable:
C. Controlled Variables/ Constants:
D. Experimental Controls/ Control Groups:
1. A study is being done to test the affects of habitat space onthe size of fish populations. Different sized aquariums are set upwith six goldfish in each one. Over a period of six months, thefish are fed the same type and amount of food. The aquariums areequally maintained and cleaned throughout the experiment. Thetemperature of the water is kept constant. At the end of theexperiment the number of surviving fish are surveryed
A. Independent Variable:
B. Dependent Variable:
C. Controlled Variables/Constants:
D. Experimental Controls/ Control Groups:
2. To determine if the type of agar affects bacterial growth, ascientist cultures E. coli on four different types of agar. Fivepetri dishes are set up to collect results:
- One with nutrient agar and E. coli
- One with mannitol-salt agar and E. coli
- One with MacConkey agar and E. coli
- One with LB agar and E. coli
- One with nutrient agar but NO E. coli
All petri dishes received the same volume of agar, and were thesame shape and size. During the experiment, the temperature atwhich the petri dishes were stored, and at the air quality remainedthe same. After one week the amount of bacterial growth wasmeasured.
A. Independent Variable:
B. Dependent Variable:
C. Controlled Variables/ Constants:
D. Experimental Controls/ Control Groups:
