Unit 9

How can a model of the solar system be used in planning a trip from Earth to another planet?

• By using the model to predict the weather conditions on the target planet
• By analyzing the positions of Earth and the target planet in the model, one can determine the most efficient route and timing for the journey.
• By determining the best hotel accommodations along the way based on the model
• To estimate distance, travel time, and fuel cost.

What are the limitations of a model of the solar system?

• Sizes of the Sun and planets and distances between the planets.

• Simplification of orbits, lack of scale, omission of moons and other celestial bodies, static representation
• Accurate representation of planetary distances
• Dynamic and interactive features

What has been the most influential in allowing manned space explorations?

• The creation of atmospheric systems that provide oxygen.

• Advancements in rocket technology
• Enhancements in train infrastructure
• Improvements in bicycle design

What are some accommodations that an astronaut’s space suit provides?

• Protection from extreme temperatures, micrometeoroids, oxygen supply, carbon dioxide removal, communication systems
• Insulation, air pressure and waste management

• Food storage
• Protection from UV radiation

What accommodation does the space suit not provide?

• Eating
• Sleeping
• Microgravity

• Reading

What does the insulated feature of the space suit layers regulate?

• Pressure
• Visibility
• Weight
• Temperature

How does the space suit backpack help astronauts breathe in a space environment?

• The space suit backpack releases oxygen from the moon's surface.
• The space suit backpack contains a portable life support system (PLSS) that provides oxygen for breathing.
• The space suit backpack has a built-in air purifier for breathing.
• The space suit backpack contains a mini garden for oxygen production.

What does the inhabitable area zone provide so that life can exist?

• Unsuitable conditions for life
• Hostile environment
• Limited resources
• Oxygen, water and correct distance from the Sun

What did Sir Isaac Newton discover that helped others understand and overcome the obstacles of modern space travel?

• Boyle's law
• Laws of motion and universal gravitation
• Theory of relativity
• Law of conservation of energy

What does the atmosphere of Earth provide to make the existence of life possible?

• Nitrogen, protection from harmful solar radiation, and temperature regulation
• Water vapor, protection from harmful solar radiation, and temperature regulation
• Carbon dioxide, protection from harmful solar radiation, and temperature regulation
• Oxygen, protection from harmful solar radiation, and temperature regulation