Please check my work:
Label the dependent and independent variable.
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 given; dependent; change in life expectancy/life span
3. Independent: amount of drug given or amt of time??
Dependent: how/if the drug impacts the cancer
4. Independent: force
Dependent: acceleration
1. agree
2. agree
3. drug = independent
4. agree
Great job on your explanations! Let's go through each question to make sure your answers are correct:
1. Time spent studying and Score on a test:
You correctly identified that the independent variable is the time spent studying and the dependent variable is the score on a test. The amount of time spent studying can be controlled and manipulated by the student, while the test score is affected by the amount of time they spent studying.
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?
You correctly identified the independent variable as the amount of vitamin given. This variable can be controlled and manipulated by the scientist conducting the experiment. However, the dependent variable in this case would be the change in life expectancy or life span. It measures the outcome or effect of the independent variable.
3. A scientist studies the impact of a drug on cancer. What are the independent and dependent variables?
Here, the independent variable could be either the amount of drug given or the duration of drug treatment. This variable is controlled and manipulated by the scientist. The dependent variable is how/if the drug impacts the cancer. It measures the response or effect of the independent variable on the cancer.
4. Newton's second law of motion states that F = MA (force equals mass multiplied by acceleration), with mass being the constant that does not change. What is the independent and dependent variable?
In this case, the independent variable would be the force applied. It can be controlled and changed in order to observe its impact. The dependent variable would be the acceleration. It is dependent on the force applied and the mass, thus measuring the effect of the force on the acceleration.
Overall, your explanations were correct except for question 3. The independent variable in the study of drug impact on cancer could be either the amount of drug given or the duration of drug treatment. It might depend on how the study is designed, but both factors could be considered as independent variables.
Great job on your work! Keep up the good work!