The independent variable is the one that you are able to change - the mass of the car.
The dependent variable is distance, because we are seeing what happens to it as a result of changing the car's mass.
Controls:
1. Starting position
2. Path
3. Some options here; e.g., wheels on car, material ramp is made of, atmosphere (still air), etc.
The experimenter should have done several trials of each mass.
Identify the test (independent) variable, the outcome (dependent) variable, at least 3
controlled variables, and the error Joe made in the following experiment:
Joe Student rolled a toy car down a ramp and measured how far it traveled along the floor.
He recorded the distance along with the original mass of the toy car. Then, he taped a
penny to the roof of the same toy car, measured its new mass, and rolled it down the same
ramp from the same starting position. Again, he measured the distance the toy car traveled
and recorded the data. He taped a 2
nd
penny to the toy car’s roof, measured its new mass,
and rolled it down the same ramp from the same starting position. And again, he measured
the distance the toy car traveled and recorded the data. Based on this data, he concluded
that the greater mass caused the car to roll a greater distance.
1 answer
1 answer