Question

a dependent variable is the effect and the independent variable is the cause. true false a student is investigating the following testable question: how does the size of the motor affect the speed of the vehicle? what is the dependent variable? size of motor brand of motor vehicle speed vehicle mass

Explanation:

In an experiment, the independent variable is the factor that is changed or manipulated (the cause), and the dependent variable is the factor that is being measured and is affected by the independent variable (the effect). For the statement "A dependent variable is the effect and the independent variable is the cause", this is a correct fundamental concept. For the question about the testable question "How does the size of the motor affect the speed of the vehicle?", the size of the motor is being manipulated (independent variable) and the vehicle speed is what is being measured and is affected by the motor - size, so it is the dependent variable.

Answer:

1. A. True
2. C. vehicle speed