Tom wanted to test his hypothesis that plants grow better at room temperature than in cold temperatures. He placed an ivy plant in the refrigerator, which had no light source.He also placed a spider plant in the window in his room.
b. What were Tom's controls?
Is it the refrigerator and window?
refrigerator and window
This did not help me , sorry but I need more help !
Refrigerator and Window because they're the one experimental controls.
In a scientific experiment, controls are the variables that are kept constant or unchanged in order to isolate the effect of the independent variable on the dependent variable. In this case, Tom's hypothesis is that plants grow better at room temperature compared to cold temperatures.
To determine the controls in Tom's experiment, we need to identify the variables that should remain constant across both conditions. Firstly, it is important to note that the independent variable is the temperature, which is being tested to see its effect on plant growth.
The control group or control condition in this experiment is the group or condition in which the independent variable is not manipulated. This allows for comparison and to determine if the independent variable has any effect.
Based on the experiment description, the control in Tom's experiment includes the refrigerator and the window because these are the conditions that are not being manipulated. The refrigerator represents the cold temperature condition, and the window represents the room temperature condition.
Therefore, the controls in Tom's experiment are the temperature of the refrigerator and the temperature at the window. These variables are kept constant to ensure that any differences observed in plant growth can be attributed to the difference in temperature alone.