Please check my work:
Label the dependent and independent vstiablr.
1. Time spent studying and
Score on a test
2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent variables?
3. A scientist studies the impact of a drug on cancer. What are the independent and dependent variables?
4. Newtons second law of motion states that F =MA Force equals mass multiplied by acceleration mass is the constant constant it does not change what is the independent and dependent variable?
1. Time spent = independent & score is dependent
2. Independent; amount of vitamin c; dependent; change in life expectancy
3. Independent: amount of drug given or amt of time??
Dependent: how/if the drug impacts the cancer
4. Independent: force
Dependent: acceleration
Number 1 should say variable
Your work is mostly correct. Here are the correct answers for each question:
1. Time spent studying = independent variable & Score on a test = dependent variable.
2. Independent variable: amount of vitamin C; Dependent variable: change in life expectancy.
3. Independent variable: amount of drug given; Dependent variable: impact of the drug on cancer.
4. Independent variable: acceleration; Dependent variable: force.
In question 3, the independent variable is the amount of drug given or administered to the subjects, and the dependent variable is how or if the drug impacts the cancer. The amount of time may not necessarily be the independent variable in this case, as it depends on the specific study design.
Let's check your work:
1. Time spent studying and Score on a test
- You correctly identified the independent variable as "Time spent studying" and the dependent variable as "Score on a test." Well done!
2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent variables?
- In this case, the independent variable would be the "amount of vitamin" because it is what the scientist can manipulate or control. The dependent variable would be the "change in life expectancy" because it is what the scientist observes or measures to see if it is affected by the independent variable.
3. A scientist studies the impact of a drug on cancer. What are the independent and dependent variables?
- For this scenario, the independent variable could be the "amount of drug given" or the "duration of drug treatment," depending on how the study is designed. The scientist can control and manipulate these variables. The dependent variable would be "how/if the drug impacts the cancer," as it is what the scientist measures or observes to evaluate the drug's effectiveness.
4. Newton's second law of motion states that F = MA (Force equals mass multiplied by acceleration), with mass being the constant. What is the independent and dependent variable?
- In this case, there is no independent or dependent variable within the equation itself. The equation represents a relationship between the variables. The independent variable would be any factor that affects the force or acceleration, such as "applied force" or "acceleration due to gravity." The dependent variable would be the "resultant force" or "final acceleration," which can be determined based on the values of the independent variable(s).
Overall, your answers are pretty good. Just make sure to consider the specific context of the question when determining the independent and dependent variables.