Characteristics of Earth for Life in Space

What are the three characteristics that people look for to see if a planet or moon can support life?

• moons, oxygen and the Goldilocks Zone
• liquid water, moons, correct temperature
• in the habitable zone, liquid water, oxygen
• in the habitable zone, carbon, sulfur

What are the first two things to look for when trying to decide if a planet may be able to support life?

• plants and animals
• oxygen and liquid water
• ice and nitrogen
• Carbon and ice

What planet or moon is most likely to be able to support life?

• Venus
• Mars
• Europa
• Pluto

What form should water be in to support life?

• gas
• solid
• liquid
• all forms of water can support life

What does the green in this picture represent?

• a gaseous ring
• water
• the habitable zone
• areas where life cannot exist

What energy source do planets need to support life?

• Mechanical Energy
• Wind Energy
• Solar energy from a sun
• Kinetic energy

The habitable zone is also called the

• Life zone
• temperature zone
• liquid water zone
• the Goldilocks zone

What is not included in the building blocks of life?

• gold
• carbon
• hydrogen
• nitrogen

What planet from the sun is Earth?

• 1st
• 2nd
• 3rd

Is it important for life that Earth is the ____ planet from the sun. (note: the blank is left to not give you the answer to the above question. The question is a yes or no question, not fill in the blank.)

• yes
• no