Scientific Method and Interpreting Graphs (MCA Review)

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

A student wants to test the effects of type of exercise on heart rate.  What is the independent variable?

• type of exercise
• heart rate
• amount of time exercise occurs
• gender of person that exercises

A student wants to test the effects of type of exercise on heart rate.  What would be a proper hypothesis?

• If type of exercise affects the heart rate of a person, then jumping jacks will increase the heart rate the most
• Jumping jacks will cause the highest heart rate
• Exercise increases heart rate
• If exercise affects heart rate, jumping jacks will increase heart rate the most

A student wants to test the effects of type of exercise on heart rate.  What would be a good experimental group?

• jumping jacks, push-ups, sit-ups, jogging in place, lunges
• standing heart rate

On which axis would you place the independent variable?

• X
• Y
• Z

On which axis would you place the dependent variable?

• X
• Y
• Z

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

What graph would you use if there are percentages involved?

• Pie chart
• Bar graph
• Line graph
• Data table

What is a line graph used for?

• Recording something over time
• Percentages

What are the two types of observation?

• Seeing, hearing, smelling, tasting, and touching
• Words and numbers
• Quality and quanted
• Quantitative and qualitative