What is a independent variable, dependent variable, and control group?

Question

I am 14 years old so try and put it in a kid way please, i think independent variable is like the "experiment" like the main thing. But am still unsure of the rest, make it as easy and simple as possible ty

Answer 1

Independent Variable: what the experimenter uses or changes to produce results.

Dependent Variable: Measured changed due to independent variable.

Control Group is what stayed the same.

Ex: You are testing the growth of flowers. You believes that flowers with fertilizer grows taller. You water the flowers equally each day. The flowers receives an equal amout of  sunlight each day.

Independent V: Fertilizer(It's changing the growth).

Dependent Variable: The Height of the flowers(whats being measured)

Control Group: Water & Sunlight. (What stays the same)

Answer 2

In in an experiment you change the independent variable.

Say, you want to see if a tennis ball with a big hole or a small hole floats better.

It's the thing that is never the same.

It's indepent, it's crazy and on it's own. =P

The dependent is the time it takes to sink, it's the part of the experiment that you can't change directly.

and the control would be a tennis ball that you didn't change at all, a normal one.