Directions: Identify the independent and dependent variables in each experiment described below. Then write a hypothesis. Circle “if” and “then” in your hypothesis.
1. Which type of music quiets a crying baby faster: jazz, classical, or rock?
Independent Variable ___ types of music ______ Dependent Variable: __ time to quiet baby ________
Hypothesis: If I try types of music, then classical music will quiet them the fastest.________
2. Does the color of the recycling bins, red or blue, affect the number of cans recycled at school?
Independent Variable ___ color of bins ________ Dependent Variable: __ number of cans recycled _
Hypothesis: _ If I three colors of recycling bins, then I think that blue colored bins will collect the most cans.
.
3. Which type of gum contains the most sugar: Brand A, Brand B, or Brand C?
Independent Variable _ brands of gum __ Dependent Variable: _ amount of sugar in gum __
Hypothesis: _ If I test three types of gum, then I think that Brand B will contain the most sugar.
_
4. Is the number of eggs a chicken lays affected by the hours of daylight?
Independent Variable _ hours of daylight _ Dependent Variable: _ number of eggs laid _
Hypothesis: If I change the hours of daylight, then I think that chickens will lay the most eggs during the longest hours of daylight.