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Unit 3: Military Inventions
Test Description: God's Design for the Physical World Series. Textbook: Inventions Technology
Instructions: Answer all questions to get your test result.
1) Which type of lever is best for a catapult?
A
2nd class
B
1st class
C
3rd class
D
4th class
2) A rifled gun barrel shoots more acurately because it causes the bullet to:
A
go faster
B
sail smoothly
C
spin
D
jump
3) At what depth is a submarine designed to operate?
A
equal to 2,000 ft
B
2,000-5,000 ft.
C
greater than 2,000 ft
D
less than 2,000 ft
4) The Doppler effects cause which characteristic of an energy wave to change?
A
Speed
B
Volume
C
Frequency
D
Amplitude
5) Doppler radar is used to track the movement of
A
People
B
Birds
C
Buildings
D
Storms
6) Which invention most revolutionized military weapons
A
War Animals
B
Gunpowder
C
Hand Weapons
D
Submarines
7) Which is NOT an ingredient in gunpowder
A
Sulfur
B
Carbon
C
Iron
D
Saltpeter
8) Who first invented gunpowder?
A
Greeks
B
Chinese
C
Romans
D
Americans
9) What branch of physics studies the movement of projectiles?
A
Geology
B
Ballistics
C
Chemistry
D
Nuclear
10) What part of a tank makes it unique- different from other vehicles?
A
Tracks
B
Computer
C
Armour
D
Artillary
11) What vehicle was designed for underwater warfare?
A
Battleship
B
Hovercraft
C
Tank
D
Submarine
12) What physical property allows submarines to rise and sink in the water?
A
Smoothness
B
Gravity
C
Temperature
D
Bouyancy
13) What substance is used as ballast on a submarine?
A
Bombs
B
Water and Air
C
Water and Sand
D
Air and Sand
14) What invention allows for the detection of objects using radio waves?
A
Gunpowder
B
Sonar
C
Tanks
D
Radar
15) What invention allows for detection of objects using sound waves?
A
Radar
B
Sonar
C
Gunpowder
D
Tanks
16) Which kind of radar system listens for signals only?
A
Sonar
B
Active
C
Passive
D
Acoustic comunication
17) Which invention required submarines to be made larger?
A
More Crew members
B
Torpedoes
C
Nuclear Reactors
D
Ballast tanks
18) Which military invention was first used in World War I?
A
Gunpowder
B
Calvary
C
Tanks
D
Submarines
19) Which of the following served some of the same military purposes as a tank?
A
Elephant
B
Submarine
C
Cannon
D
Radar
*select an answer for all questions
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