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- 1. Multiple Choice
Which of the following requires the most energy to be thrown into the air?
- 2. Multiple Choice
When you throw an object straight up, why doesn't it fly off into space?
There's too much thrust acting on the object
Earth's atmosphere prevents the object from going into space
The object travels too fast to reach Earth orbit
The force of gravity pulls the object back down to Earth
- 3. Multiple Choice
Which two opposing forces are at work when a rocket flies into space?
Drag and torque
Gravity and thrust
Thrust and torque
Drag and gravity
- 4. Multiple Choice
A jet pack is a type of rocket system that can allow a human to "fly" for short distances. What can you infer about how jet packs work?
The thrust created by a jet pack must be greater than the force of gravity acting on the user and the pack.
The user must weigh less than the jet pack to lift off the ground.
The weight of the fuel in the jet pack must be greater than the weight of the user in order to achieve liftoff.
The force of gravity on the user must decrease as he is lifted off the ground.
- 5. Multiple Choice
In this illustration of a liquid-fuel rocket, which letter represents the payload?
A
B
C
D
- 6. Multiple Choice
What is one main difference between solid-fuel rockets and liquid-fuel rockets?
Solid-fuel rockets don't require an oxidizer to work; liquid-fuel rockets do
Liquid-fuel rockets can't lift heavy payloads; solid-fuel rockets can
Solid fuel-rockets launch with pre-mixed fuel and oxidizer; liquid-fuel rockets combine the fuel and oxidizer at launch
Liquid-fuel rockets contain a higher proportion of oxidizer to fuel than solid-fuel rockets do
- 7. Multiple Choice
The combination of fuel and oxidizer in the presence of a spark or flame results in a combustion reaction. Which is another example of a combustion reaction?
Mixing honey into a cup of tea
Setting a piece of wood on fire
Heating water until it boils
Combining flour and sugar to make dough
- 8. Multiple Choice
Put the following into the correct order for a rocket launch: A) Heated gas is expelled; B) Oxidizer and fuel mix; C) Force of thrust exceeds force of gravity on the rocket.
A, B, C
B, C, A
B, A, C
C, B, A
- 9. Multiple Choice
Which part(s) of the U.S. space shuttle is/are not reusable?
The orbiter
The external fuel tank
The solid rocket boosters
The main engine nozzles
- 10. Multiple Choice
The farther apart two objects are, the weaker the force of gravity is between them. What can you infer from this?
A body orbiting Saturn feels a weaker gravitational pull from Earth than a body orbiting Mars
The Earth's gravity exerts a stronger pull on spacecraft orbiting the moon than spacecraft in low-earth orbit
A spacecraft that has left the solar system feels no gravitational pull whatsoever from Earth
Any spacecraft launched from Earth will, given enough time, eventually fall into the sun
- 11. Multiple Choice
_________________ can work in a number of areas, but they generally analyze, design, develop, and test aircraft, spacecraft, or missile systems. They work with airplane systems, while astronautic engineers focus on spacecraft.
Civil engineers
Electrical engineers
Aerospace engineers
Chemical engineers
- 12. Multiple Choice
After earning a Ph.D. in physics, _______________ patented two devices in 1914: a rocket powered by liquid gasoline and nitrous oxide, and a multi-stage, solid-fuel rocket. Five years later, he published a groundbreaking work entitled, A Method of Reaching Extreme Altitudes, in which he discussed the possibility of launching a rocket that could escape Earth’s gravity and reach the moon.
Norm Carlson
Yuri Gagarin
Alan Shepard
Robert Goddard
- 13. Multiple Choice
These human-flown crafts reach space briefly but come back down to Earth before completing a full orbit. Examples include the X-15 and SpaceShipOne space planes.
Piloted suborbital
Lunar craft
Piloted orbital
Space craft
- 14. Multiple Choice
In the 1980s, a feast of ________________ after each shuttle launch had become a tradition among NASA’s Kennedy Space Center (KSC) in Cape Canaveral, FL managers and engineers.
space food
ham and mashed potatoes
beans and cornbread
turkey and stuffing
- 15. Multiple Choice
There are ________________ spacecraft now on their way out of the solar system. The farthest from the sun is Voyager 1, which launched in 1977 and is already more than 100 AU away from home. (1 AU, or astronomical unit, equals about 150 million kilometers.) That sounds far, but consider this: The closest star to the sun, Proxima Centauri, is 267,000 AU away!
five
six
four
eight
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