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## Using Graphs to Compare Lift Variables Answers

Data Table

### Questions

1. What does a graph with a straight line tell us about how the data changes? A graph with a straight line shows a steady increase (or decrease depending on the slope).
2. What does an upward curve indicate on a graph? A graph with an upward curve has an increasing slope. So as the independent variable increases, the dependent variable increases, but at a greater rate.
3. How does the data change if you have a line that curves downward on your graph? A downward curve shows a decrease at a varying rate.
4. Which lift variables seem to change at a steady rate? Angle, camber, and area seem to increase at a steady rate.
5. Which lift variables tend to change at an increasing rate? Decreasing rate? Airspeed increases at an increasing rate. Altitude decreases at a decreasing rate, while thickness increases at a decreasing rate.

Related Pages:
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Lesson Index
Aerodynamics Index

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