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Check your knowledge! Take our fun quiz for the advanced Sailing Section of the Sports Chapter of our textbook! Follow the instructions and then click on the "Check it!" button for each question.

Advanced Activities: Sailing

1.	No exact date is known for the invention of the sail. (Check the correct answer.)
	True False

2.	Four ways of getting around in the water are: floating, rowing, sailing, and kicking. (Check the correct answer.)
	True False

3.	The first mode of travel on water was simply by ______________. (Check the correct answer.)
	sailing motoring floating

4.	At one time, standard gear of a Roman soldier included an inflatable skin for river crossings. (Check the correct answer.)
	True False

5.	___________ were used to push along the river bottom, before oars were used. (Check the correct answer.)
	Sticks Poles Pipes

6.	The first sail was probably put on a boat on the Nile river more than __________ years ago. (Check the correct answer.)
	50,000 5,000 500

7.	What century was the lateen or triangular sail invented? (Check the correct answer.)
	1st 5th 9th

8.	The inventors of the triangular sail understood the aerodynamic principals of sails. (Check the correct answer.)
	True False

9.	The ___________ sail allowed boats to sail into the wind for the first time. (Check the correct answer.)
	square triangular oval

10.	The angle of the sail alignment to the heading is known as the angle of attack. (Check the correct answer.)
	True False

11.	The angle of attack must be precise. If the angle is to wide then the sail will not fill. (Check the correct answer.)
	True False

12.	The strongest force is where the curve of the sail is the deepest. (Check the correct answer.)
	True False

13.	Force increases if the flow at the rear or the sail separates. (Check the correct answer.)
	True False

14.	In the __________ of the sail the force changes to a sideways, or heeling, direction. (Check the correct answer.)
	front middle rear

15.	The keel keeps the boat going straight. (Check the correct answer.)
	True False

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