Flashcard: NYS Lab Making Connections

Flashcard
•
Biology
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a dependent variable in an experiment?
Back
The dependent variable is the factor that is measured or observed in an experiment, which changes in response to the independent variable.
2.
FLASHCARD QUESTION
Front
In the context of an experiment, what is an independent variable?
Back
The independent variable is the factor that is manipulated or changed by the experimenter to observe its effect on the dependent variable.
3.
FLASHCARD QUESTION
Front
What does it mean to increase the validity of an experiment?
Back
Increasing the validity of an experiment means improving the accuracy and reliability of the results, often by increasing sample size or controlling variables.
4.
FLASHCARD QUESTION
Front
What is the purpose of a control group in an experiment?
Back
A control group is used as a standard for comparison; it does not receive the experimental treatment and helps to isolate the effects of the independent variable.
5.
FLASHCARD QUESTION
Front
How can exercise affect heart rate?
Back
Exercise typically increases heart rate as the body requires more oxygen and nutrients to fuel muscles during physical activity.
6.
FLASHCARD QUESTION
Front
What is the significance of recording pulse rate in beats per minute?
Back
Recording pulse rate in beats per minute provides a standardized measure of heart activity, allowing for easy comparison before, during, and after exercise.
7.
FLASHCARD QUESTION
Front
What is the relationship between exercise duration and heart rate?
Back
Generally, as the duration of exercise increases, heart rate also increases, reflecting the body's increased demand for oxygen.
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