Identify the variables from the experiment below.
Timmy has decided he wants to test which if music can read help flowers grow. He decides to expose some roses to classic music 10 minutes every day. He will have another group of roses that will receive no music and a third group that will get music for 20 minutes per day. Timmy makes sure to have the same types of plants in each group and to expose them to music at the same time during the day. He also makes sure that all plants get the same amount of water and sunlight each day. At the end of 2 weeks, Timmy measures the height of all plants to see if the music made a difference.
identify the independent variable, dependent variable and at least 2 control variables in this experiment.
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.
A dependent variable is the response or measure of results.
Extraneous variables — other than the independent variable — potentially can affect the dependent variable, so they must be controlled. If possible, you try to keep them constant between the experimental and control group.
The experimental group receives the independent variable.
The control group is similar to experimental, except it does not receive the independent variable. Extraneous variables are balanced between experimental and control groups.
Timmy has decided he wants to test which if music can really help flowers grow. He decides to expose some roses to classic music 10 minutes every day. He will have another group of roses that will receive no music and a third group that will get music for 20 minutes per day. Timmy makes sure to have the same types of plants in each group and to expose them to music at the same time during the day. He also makes sure that all plants get the same amount of water and sunlight each day. At the end of 2 weeks, Timmy measures the height of all the plants to see if the music made a difference. (4 points)
Question:
Identify the independent variable, dependent variable and at least 2 control variables in this experiment
hi thx for the help
The independent variable in this experiment is the amount of music exposure, specifically the duration of music played each day (10 minutes for one group, 0 minutes for another group, and 20 minutes for another group).
The dependent variable in this experiment is the height of the plants, as this is what is being measured to determine if the music had an effect on their growth.
Two control variables in this experiment are:
1. The types of plants used in each group: By using the same types of plants in each group, it ensures that any differences in height can be attributed to the music exposure rather than variations in plant species.
2. The time and duration of music exposure: Timmy makes sure to expose all groups to music at the same time of day and ensures that the control group receives no music. This control helps isolate the impact of music on plant growth, allowing for a comparison of the effects between groups.
It's important to note that Timmy also controls the amount of water and sunlight each group receives, ensuring these variables remain constant for all groups. Although not explicitly mentioned in the experiment, this control helps minimize their potential influence on plant growth and keeps them constant across all groups.