Life in Space

Why is Earth more likely to support human life than other planets in our solar system?

• It has a molten core

• It has oxygen and water

• It receives more solar radiation

How does Earth's location in the solar system make it suitable for sustaining life?

• Earth's distance from the Sun is just right for temperature

• Earth's distance from the Moon is just right for tides

• Earth's distance from other planets is creates liquid water

How does gravity help make Earth habitable?

• it prevents sunlight from harming us

• it allows plants to grow

• it holds the atmospheres in place

Why is Earth better able to sustain life than Venus?

• Venus has no moon but we do

• Earth has a thicker atmosphere

• Earth's temperature is lower than Venus

What is the BEST reason life is sustainable on Earth?

• four seasons

• the moon

• the gas planet

• liquid water

In order to survive, astronauts must do what with their water?

• Conserve

• Recycle

• Reuse

• All of these are correct

What is the most important factor that determines Earth’s temperature?

• Distance to the Moon
  
• Gas composition of the atmosphere
• Proximity to the Sun
  
• Amount of water on the planet

What conditions would you look for if you were looking for life on moons or other planets besides Earth?

• Moderate temperature, ice, and the presence of a gas containing atmosphere.
• Cold temerature, liquid water, and the absence of gas containing atmosphere.
• Moderate temperature, liquid water, and presence of a gas containing atmosphere.
• Hot temperature, liquid water, and the absence of gas containing atmosphere.

What does the space suit provide protection against?

• Extreme temperatures
• Muscle loss
• Bone loss
• Excessive oxygen

Which of the following accommodations on the space station is used by astronauts to combat the effects of microgravity on their bones?

• special handles

• Velcro straps

• Exercise equipment

• oxygen system