define these terms or questions:
what is an inital observation?
what is an independent variable?
what is an dependent variable?
what is a control group?
The initial observation is the first thing you see that relates to your project.
You'll find the other terms defined here.
http://www.sciencebuddies.org/science-fair-projects/project_variables.shtml
Initial observation- is the beginning of your observation and your observation of the whole subject.
Independent Variable- is the variable that you change in an experiment.
Dependent Variable- is the variable that changes due to the reaction of the independent variable. Keep the same.
Control group- is the variable you leave alone to have a comparison of your experiment.
Can't wait for college then the NBA.
Sure! Let's define these terms one by one:
1. What is an initial observation?
An initial observation refers to the first step in the scientific process, where researchers make a note of any existing information or data regarding the topic they are investigating. It involves observing and gathering information about the problem or phenomenon before conducting any experiments or research.
To make an initial observation, you can start by gathering background knowledge, reading relevant literature or research papers, talking to experts in the field, or even conducting preliminary experiments to gain insights into the topic you wish to study.
2. What is an independent variable?
In a scientific experiment, an independent variable is the one that the researcher deliberately changes or manipulates. It is the variable believed to have an effect on the dependent variable. The independent variable is chosen and controlled by the researcher to study its impact on the outcome of the experiment.
For example, if you are studying the effect of different doses of a medication on patients' heart rate, the independent variable would be the different doses of the medication. By varying the doses, you can observe and analyze how they influence the dependent variable, which, in this case, is the heart rate.
3. What is a dependent variable?
The dependent variable, in a scientific experiment, is the outcome or the variable that is being measured and is expected to be affected by changes in the independent variable. It is the variable that researchers observe and collect data on to analyze the results and draw conclusions.
To continue with the previous example, the dependent variable would be the heart rate of the patients. By measuring and comparing the heart rates across different doses of the medication, researchers can determine how the independent variable (medication dose) impacts the dependent variable (heart rate).
4. What is a control group?
In a scientific experiment, a control group is a group that serves as a baseline for comparison. It is a group that does not receive the treatment or the manipulation of the independent variable. The purpose of the control group is to provide a reference point to assess the effectiveness or impact of the independent variable on the dependent variable.
For example, if you are testing the effectiveness of a new fertilizer on plant growth, the control group would consist of plants that receive no fertilizer, while the experimental group would receive the new fertilizer. By comparing the growth of the control group to the experimental group, researchers can determine if the fertilizer has a significant effect on plant growth.
By understanding these terms, you can apply them in scientific research to design and conduct experiments, analyze data, and draw meaningful conclusions.