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Darina [25.2K]
2 years ago
8

You want to test which size of soccer (football) ball is easiest to juggle with your feet. You test a size 3, size 4 and a size

5 ball. You count the seconds the ball stays in the air for each of the trials. You allow yourself to use both of your feet, knees, and head to juggle the ball. a. Independent Variable: b. Dependent Variable: c. Control Variable:
Biology
1 answer:
Semenov [28]2 years ago
4 0

Answer:

<u>independent variable:</u> size of soccer ball

<u>dependent variable</u>: period of time the balls stay in the air

<u>control variable</u>: parts of the body used to juggle the ball

Explanation:

The independent variable is the manipulatable variable supplied into an experiment. It is a variable that directly affects the dependent variable.

The independent variable is the outcome variable. It is the variable that is primarily measured from experiments whose value depends on the value of the independent variable.

The control variables are those that are kept constant throughout the course of experiments. In other words, they do not directly affect experimental outcomes.

Hence, in the illustration;

<u>independent variable</u>: size of soccer ball

<u>dependent variable</u>: period of time the balls stay in the air

<u>control variable</u>: parts of the body used to juggle the ball

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<u>Unusually cold winter</u> is a density-independent factor for a flock of Canada geese on a large lake.

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The other factors are density-dependent except unusually cold winter. The cold is not affected by the population density of the Canadian geese. However, an increase in cold causes the population density to decrease because some individuals in the population will be unable to cope with the cold. Only individuals with traits favorable in the bitter cold survive.

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Answer A)

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Answer B)

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\large\boxed{\text{The first choice.}}

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