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25 Cards in this Set
- Front
- Back
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What is a rocket?
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A device that expels gas in one direction to move in the opposite direction.
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Where did rocket technology originate?
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China
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When were the first rockets made?
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1100s
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What were early rockets like?
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They were simple. They were arrows coated with a flammable powder that were lighted and shot with bows.
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The British greatly improved rocketry in the early ________.
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1800s
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The Star-Spangled Banner describes the British rocket attack on Fort ________ in _________, ___________.
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Mchenry, Baltimore, Maryland
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When were modern rockets first developed?
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Early 1900s.
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How did Russian physicist Konstantin Tsiokovsky contribute to the development of rockets?
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He described in scientific terms how rockets work and proposed designs for advanced rockets.
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What did American physicist Robert Goddard contribute to the development of rockets?
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He tested Tsiokovsky's designs.
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Military rockets were used to carry ________.
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explosives
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What was the rocket called that could travel about 300 km and used by the Germans in World War II?
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The V2
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Who designed the V2?
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Wernher von Braun
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Where did Wernher von Braun go to after World War II? What did he do there?
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He went to the USA. He used his experience to direct the development of many rockets used in the space program.
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How does a rocket move forward?
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A rocket moves forward when gases shooting out the back of the rocket push it in the opposite direction.
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What is Newton's 3rd law?
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For every force, or action, there is an equal and opposite force, or reaction.
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What is the reaction force that propels the rocket forward?
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thrust
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What is velocity?
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speed in a given direction
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What is orbital velocity?
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The velocity a rocket must achieve to establish an orbit.
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What is escape velocity?
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The velocity a rocket must reach to fly beyond a planet's gravitational pull.
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What are the 3 types of fuel used to power modern spacecrafts?
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solid fuel, liquid fuel, and ions.
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How does a solid-fuel rocket work?
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Oxygen is mixed with fuel, which is a dry explosive chemical.
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Explain how a liquid-fuel rocket works.
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Both the oxygen and fuel are liquid. They are stored in separate compartments. When the rocket fires, the fuel and oxygen are pumped into the same chamber and ignited.
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Explain how an ion rocket works.
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They expel gas ions out of their engines at very high speeds.
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Who proposed the idea of a multistage rocket?
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Konstantin Tsiolokovsky
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What is the main advantage of the multistage rocket?
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The total weight of the rocket is reduced greatly as the rocket rises.
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