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:

independent variable: size of soccer ball

dependent variable: period of time the balls stay in the air

control variable: 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;

independent variable: size of soccer ball

dependent variable: period of time the balls stay in the air

control variable: parts of the body used to juggle the ball

the dark variety, as they are not visible on the dark tree barks

explanation:

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation: