Final answer:
An experiment is an organized procedure for studying something under controlled conditions by manipulating one variable to determine its effect on another, while keeping all other variables constant.
Step-by-step explanation:
A(n) experiment is an organized procedure to study something under controlled conditions. The process involves manipulating one variable (the independent variable) to observe the effect on another variable (the dependent variable). Control variables are kept constant to ensure that any observed effects can be attributed to changes in the independent variable. Experiments are a crucial part of the scientific method because they allow researchers to determine cause-and-effect relationships between variables.
For example, if a scientist hypothesizes that the color of light affects plant growth, the color of the light would be manipulated as the independent variable, and the plant's growth would be measured as the dependent variable. Other factors, like the amount of water and temperature, would be kept the same across all the plants to ensure that any changes in growth are due to the color of light alone.