Requirements for Life on Earth

The entire mass of air that surrounds Earth, made up of 78% nitrogen, 21% oxygen, and trace amounts of other gases.

• Ozone Layer

• Solar Winds

• Atmosphere

• Magnetosphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What characteristics of the planet, Earth, is essential to the survival of living organisms?

• Earth has abundant available water
  
• Earth has just one orbiting moon.
• Earth orbits the Sun once every 365 days
  
• Earth rotates on its axis once every 24 hours.

Tags

NGSS.MS-ESS2-4

Layer of ozone in upper atmosphere of Earth is important to life because it shields Earth from

• changes in temperature.
• ultraviolet radiation.
• solar winds.
  
• impacts from meteors.

Earth is 150 mil. km from the Sun. If it was 200 mil. km away, it wouldn't support life because

• there would be less exposure to solar wind.
• the oxygen would leave the atmosphere.
• the temperature would be too cold.
• the surface water would evaporate
  

Tags

NGSS.MS-PS3-4

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

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS3-5

Which of the following is NOT a requirement for life to exist on a planet?

• presence of water
• just the right amount of gases in the atmosphere
• just the right period of rotation
• just the right distance from the Sun

Tags

NGSS.MS-ESS2-4

Which 2 elements make up most of Earth's atmosphere?

• Nitrogen and Carbon Dioxide
• Oxygen and Carbon Dioxide
• Carbon Dioxide and Water Vapor
• Nitrogen and Oxygen

Even though the moon is in the habitable zone, why is there no life there?

• no atmosphere

• No water

• Exposed to solar radiation

• All of these are correct