Guide to Propulsion
Gas Properties Definitions
If so instructed by your teacher, print out a worksheet page for
After reading the Web
page Gas Properties Definitions,
complete the questions shown below. Access additional Web pages from the
Guide to Propulsion as needed.
Needed: 2 beakers or jars, about 250 mL food coloring or dye in a
squirt bottle or with a dropping pipe
1. What is the
meaning of the term micro?
2. What is
the meaning of the term macro?
3. In terms
of observation, what is the difference between micro and macro?
air is treated as a uniform gas, its major component is _____________.
5. Why doesn't
a gas have a fixed shape or size?
6. Which theory
is used to describe the behavior of gases?
7. What does
the theory above assume about the size of gas molecules?
8. What does
the theory assume about the motion of gas molecules?
9. A gas is
an example of a fluid. What other state of matter is an example of a fluid?
two beakers and fill them with water. Carefully add a dropper of dye or
food coloring to the top of the water. Describe the process you observe:
11. What is
the name of the process you observed?
squirt a dropper of dye or food color into the second beaker of water,
and describe the process you observe.
13. Why did
the dye move differently the second time?
14. If you
now stir the dye around in a circular motion in the beaker, you should
see _________________ motion.
15. What is
16. What is
a boundary layer?
17. Which scientist
introduced the concept of boundary
18. This discovery
is the greatest discovery in the field of ___________________
19. Air viscosity
and boundary layer are important in flight because they affect which two
forces involved in flight?
20. At high
speeds, the air is compressed during flight. What happens to the density
of the air? __________________________________ Click on Animated
Gas Lab, fix the temperature, and then fix the mass to see what effect
increasing the pressure has on density. (Density is mass per unit of volume.