BEST COLLABORATED DESIGN 7

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Does the size of an aquarium determine how large the fish will grow?

INCLUDE ALL OF THE FOLLOWING WITH YOUR EXPERIMENTAL DESIGN:
[remember it must be a controlled experiment]
1. A hypothesis:
  • An aquarium's size will not determine how large the fish will grow.
2. Explain how to set up the experiment:
  • To set up this experiment, get a total 40 fish.
  • Then get 4 aquariums.
  • Seperate the 40 fish into groups of 10.
  • Put each group of 10 in a aquarium.
  • The 4 aquariums will be different sizes.
  • One aquarium will be small.
  • Another aquarium will be medium or normal sized.
  • Also, an aquarium will be large.
  • Last, an aquarium will be extra large sized.
  • Every fish will be brought to the aquariums at the same age.
  • Each fish will be the same type.
  • They will live in their respective tanks for a total time period of 2 months.

  • After 2 months, the fish will be examined in their aquarium to see which aquarium of fish has grown the largest.

Brainstorm a list of all the variables that must be kept constant during the experiment:
  • how much you feed the fish
  • brand of fish food
  • quality of water
  • brand of aquarium
  • type of fish
  • condition of the tank
  • type of water (salt or fresh)
  • quality of fish food
  • temperature of the water
  • age of fish when first put in aquarium
  • health of fish before experiment
Include identification of the independent variable:
  • The sizes of the four different aquariums
The dependent variable:
  • The different fish in the aquariums.
Identify the control group:
  • The fish in the normal sized aquarium
Identify the experimental group(s):
  • The 3 other groups of fish in the other aquariums