Flight and Space

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

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

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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

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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

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What is the primary function of the ailerons on an airplane?

• To control pitch

• To control yaw

• To control roll

• To provide lift

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What is the main purpose of the ailerons on an airplane?

• Control pitch

• Control roll

• Control yaw

• Increase lift

Which part of an airplane is responsible for generating lift?

• Fuselage

• Wings

• Tail

• Engine

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

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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.

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In this illustration of a liquid-fuel rocket, which letter represents the payload?

• A

• B

• C

• D