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Check your knowledge! Take our fun quiz for the beginner Flight Without Wings Section of the History Chapter of our textbook! Follow the instructions and then click on the "Check it!" button for each question.

Intermediate Activities: Balloonists

1.	During Greek times a great mathematician, Archimedes discovered the principle of buoyancy. (Check the correct answer.)
	True False

2.	This fact helped in the progress of true flight. (Check the correct answer.)
	True False

3.	Men used Archimedes's principle to help them with the hot-air-balloon. (Check the correct answer.)
	True False

4.	Roger Bacon made a flying machine that was a _______ shape. (Check the correct answer.)
	square balloon triangle

5.	He wrote about his invention in the book The Wonderful Power Of Art And Nature in 1250, but it wasn't published until ________. (Check the correct answer.)
	1540 1541 1542

6.	In ------- John Wilkins, a member of the Royal Society of London, was able to bring forth the scientific principles of Roger Bacon. (Check the correct answer.)
	1647 1648 1649

7.	Their flight is named the first manned lighter-than-air flight. (Check the correct answer.)
	Montgolfier Brother's Wright Brother's

8.	Practical air travel had begun. (Check the correct answer.)
	True False

9.	The first controllable airship that could be steered back to its starting point regardless of the wind was built by Charles Renard and A.C. Krebs in ________. (Check the correct answer.)
	1882 1883 1884

10.	_________ years later a German man, Zeppelin used an engine to fly balloons. (Check the correct answer.)
	30 50 70

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