Unit 9 Space test review

Europa is one of Jupiter's moons.What is one disadvantage of exploring Europa for life?

• Europa is far from the Sun and likely has extreme temperatures that won't support life.

• Europa is very large, making it hard to travel on.

• Europa is very similar to Earth's moon, which is known to already not have life.

• Europa is probably capable of supporting only microscopic life.

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Proxima Centauri is the closest star to the sun. It would take the New Horizons spacecraft, the fastest spacecraft to date, 71,400 years to reach Proxima Centauri at its current speed. What is the best prediction about the future of exploration of other stars?

• Improvements in speed and unmanned spacecraft are necessary for further exploration.

• Humans will travel to a distant star in the near future.

• Mankind will never send a probe outside the Earth's solar system because it is too far and technology will never improve.

• The exploration of stars will improve with better telescopes and infrared technology.

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Through the discovery of space travel, scientists developed rocket engines. These engines are unique becasue they can be used in space. Why would a spacecraft use a rocket engine instead of an engine found in a car on Earth?

• Because a rocket engine requires no atmospheric gases to perform a chemical reaction to push the spacecraft forward

• Because a rocket engine sucks up flowing air in Earth's atmosphere to push the spacecraft forward in space

• Because a rocket engine has very little power and can't damage a spacecraft when pushing it forward

• Because a rocket engine attracts solar flares from the Sun to push the spacecraft forward toward Earth

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What was the purpose of the first pressure suit worn by Wiley Post as shown in the image?

• To accommodate high gravity so blood in the body flows downward.

• To protect against high temperatures in space travel to prevent astronauts from burning.

• To handle pressures at high altitudes to prevent astronauts from losing consciousness.

• To manage carbon dioxide levels at high altitudes so astronauts could breathe.

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What was one of the most challenging space-flight technologies to develop for Yuri Gagarin's first manned space flight in 1961?

• Powerful and controllable rocket propulsion.

• Vacuum-resistant paint for the rocket's exterior.

• Seats that were comfortable in zero gravity.

• Radio communications able to transmit through the vacuum of space.

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What is the primary force behind planetary orbits?

• Electricity

• Magnetism

• Friction

• Gravity

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While gazing through a telescope, Jada observed a bright spot moving fast through the sky followed by a stream of hot dust. What did Jada most likely observe?

• An asteroid

• A comet

• A meteor

• A moon

Which planet is the second-largest gas giant in our solar system?

• Jupiter

• Uranus

• Neptune

• Saturn

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Jacob is assigned to create a model of a gas giant. Which of the following planets could he use for his model?

• Venus

• Mars

• Jupiter

• Mercury

Which planet is the largest in the solar system?

• Jupiter

• Saturn

• Mercury

• Earth

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