Welcome to the Habitable Zone!

The only planet that can support life is _____________________________.

• Mercury
• Neptune
• Pluto
• Earth

What is the habitable zone?

• A zone with the correct distance away from a star
• A zone in space where water turns into vapor
• A zone where life can not be sustained
• A zone in space where water is frozen

In order for life as we know it to exist, a planet must have ______________________

• heat
• animals
• liquid water
• solar energy

Earth’s atmosphere contains water vapor and carbon dioxide. These greenhouse gases are important because they -

• are substances animals need to breathe.
• trap thermal energy in the atmosphere.
• 
  protect against magnetic particles.
• create Earth’s gravitational field.

Which helps protect the earth from radiation?

• Water
• Atmosphere
• Mantle
• Gravity

Mars is inside the habitable zone.

• true
• false

The Goldilocks Zone is determined by the

• mass and brightness of the planet
• mass of the planet
• mass and temperture of the star
• gravity of the star

What is the goal of the Kepler mission?

• Survey a portion of our region of the Milky Way Galaxy to discover dozens of Earth-sized planets in or near teh habitable zone.

• Survey a portion of our region of the Milky Way galaxy to discover dozens of Earth-sized planets in or near the in-habitable zone.

• Survey a portion of our region of the Milky Way galaxy to discover dozens of Mercury-sized planets in or near the habitable zone.

• Survey a portion of our region of the Milky Way galaxy to discover dozens of Earth-sized planets in or near the habitable zone.

If a planet was positioned half in & half out of the habitable zone it would be able to...

• Sustain life because it half of the amount of water will be in liquid form.

• Possibly sustain life based on having some water being in liquid form & geothermal activity.

• Not support life because half of the water is frozen.

• Partially support life, but half of the organisms will freeze when the planet rotates halfway out of the habitable zone.

Scientist search for planets similar to earth based on these characteristics...

• The number of other planets that surround the star similar to our Sun.

• Distance from star & number of moons the planet has.

• The color & size of the star.

• Proximity, temperature, and mass of a nearby star.