#51 Goldilocks Habitable Zone

Why is liquid water important for life?

• It is a source of energy.

• It acts as a medium for dissolved molecules and reactions.

• It provides oxygen for breathing.

• It is used for photosynthesis.

What is the habitable zone?

• A region where stars are born.

• A zone where conditions are just right for liquid water.

• An area with the highest temperature in the solar system.

• A place where planets have rings.

What happens if the Sun were smaller or dimmer?

• Earth would be too hot.

• Earth would be too cold.

• Earth would have no atmosphere.

• Earth would have more gravity.

What could extend the habitable zone on a planet or moon?

• Presence of volcanoes.

• Hydrothermal vents in oceans covered by ice.

• High atmospheric pressure.

• Strong magnetic fields.

Why is a long-lived star important for life?

• It provides more light for photosynthesis.

• It allows enough time for life to evolve beyond simple forms.

• It creates more planets.

• It increases the temperature of planets.

What is a stable orbit important for?

• Preventing planets from colliding.

• Maintaining consistent temperatures for life to evolve.

• Increasing the speed of planetary rotation.

• Enhancing the magnetic field of a planet.

What happens if a planet does not have sufficient mass?

• It will have too much gravity.

• It cannot retain water and important gases.

• It will have a stronger magnetic field.

• It will have more moons.

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

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.

Tags

NGSS.MS-ESS2-4

What characteristic makes large, gaseous worlds like Jupiter less likely to offer habitable conditions?

• Their composition and structure

• Their distance from the Sun

• Their magnetic fields

• Their rotation speed