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Check your knowledge! Take our fun quiz for the beginner How Air Moves Over Objects Section of the Fundamentals Chapter of our textbook! Follow the instructions and then click on the "Check it!" button for each question.

Intermediate Activities: How Air Moves Over Objects?

1.	If you are close to an explosion you would here it after someone standing farther away. (Check the correct answer.)
	True False

2.	On a typical day the speed of sound is about _______ miles per hour. (Check the correct answer.)
	720 740 760

3.	Airflow over Mach 1 is called ________ flow. (Check the correct answer.)
	supersonic hypersonic subsonic

4.	Anything that moves against another object causes friction or resistance to motion between the two objects. (Check the correct answer.)
	True False

5.	When a fluid like air flows across a surface such as a wing, there is friction resisting the motion. (Check the correct answer.)
	True False

6.	When the flow in layer is smooth it is called ___________. (Check the correct answer.)
	turbulent laminar

7.	When you have layers that start to mix and swirl, it is called a ________. (Check the correct answer.)
	laminar turbulent

8.	When a flow separates on a wing, the condition is known as _______. (Check the correct answer.)
	wake vortex stall

9.	When a plane flies faster than the speed of sound, a shock wave is created. (Check the correct answer.)
	True False

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