"To Fly" Quizziz

Why did Lord Kelvin say it would be impossible for humans to fly?

• Things heavier than air cannot fly

• Humans would not be able to breathe at altitudes necessary for flight

• Powerful air currents could cause any flying vehicle to crash

• It is impossible to design artificial wings

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How does the author respond to Kelvin's assertion about flight?

• He suggests that technological ingenuity can solve all problems.

• He points out that birds are heavier than air, yet they fly

• He reminds the reader that Kelvin was not an inventor

• He reveals plans for a self-propelled airplane

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Why does the author present information about the speed of sound?

• to show that the laws of physics were made to be broken

• to reveal the difference between physics and other sciences

• to indicate how rapidly humans have overcome the laws of physics

• to prove that anything not prohibited by the laws of physics is possible

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What did the author think was the greatest achievement in flight so far?

• the launch of Voyager 2

• the Apollo 11 lunar landing

• the Wright Brothers’ airplane

• the breaking of the sound barrier

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What is the author saying about humans?

For millennia, the idea of being able to fly occupied human dreams and fantasies. Waddling around on Earth’s surface as majestic birds flew overhead, perhaps we developed a form of wing envy. One might even call it wing worship.

• They want the powers that they observe in other creatures.

• They sometimes pray to birds because birds are magnificent.

• They should give up on the notion that they will ever outfly birds.

• They live in a world of fantasy instead of keeping their feet on the ground.

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What does the author mean when he says that this line of reasoning is flawed?

We did, however, ultimately learn to fly because of the technological ingenuity afforded by our human brains. And of course, while birds can fly, they are nonetheless stuck with bird brains. But this self-aggrandizing line of reasoning is somewhat flawed, because it ignores all the millennia that we were technologically flightless.

• We may be smarter than birds, yet we failed to fly until very recently.

• Bird brains may be just what is needed in order to fly successfully.

• We cannot logically compare the brains of two different species.

• We humans typically exaggerate our accomplishments.

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According to the author, why can people fly faster than the speed of sound, but not faster than the speed of light?

• The speed of light is simply too fast.

• The speed of sound is difficult enough to beat.

• The laws of physics prevent breaking the light barrier.

• The sound barrier is far easier to test with modern technology.

Which of these passages best supports what the author states is why people can fly faster than the speed of sound but not faster than the speed of light?

• Any limits to breaking the sound barrier were purely psychological and technological.

• Although other craft routinely travel many times faster than the speed of sound, none can travel faster than the speed of light.

• Credit the Apollo astronauts who went to the Moon with attaining the highest speeds at which humans have ever flown: about seven miles per second at the end of the rocket burn that lifted their craft beyond low Earth orbit.

• Actually, the real problem is not the moat that separates these two speeds but the laws of physics that prevent any object from ever achieving the speed of light, no matter how inventive your technology.

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What is the most likely reason for the lunar module's name, Eagle?

• Eagles can fly farther than all other birds.

• The people who named the module were making a joke.

• Orville and Wilbur Wright’s first plane was named “Kitty Hawk.”

• As America’s national bird, the name “Eagle” best represents our power in being the first nation to the moon.

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Which of these passages best supports reason for the Lunar module's name being Eagle?

• The United States even adopted a flying predator as a symbol of its strength: the bald eagle, which appears on the back of the dollar bill, the quarter, the Kennedy half dollar, the Eisenhower dollar, and the Susan B. Anthony dollar.

• Previously, people had flown in balloon gondolas and in gliders and had executed controlled descents from the sides of cliffs, but none of those efforts would have made a bird jealous.

• Never min that Apollo astronauts landed on the airless Moon, where wings are completely useless, in a lunar module named after a bird.

• A mere sixty-five years, seven months, three days, five hours, and forty-three minutes after Orville left the ground, Neil Armstrong gave his first statement from the Moon’s surface: “Houston, Tranquility Base here. The Eagle has landed.”

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