Which of the following elements are mainly required by living organisms on Earth?

• Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur

• Helium, Neon, Argon, Krypton

• Iron, Copper, Zinc, Silver

• Sodium, Potassium, Calcium, Magnesium

Tags

NGSS.HS-LS1-6

What is needed as a solvent for biochemical reactions in living organisms on Earth?

• Water

• Oxygen

• Carbon dioxide

• Salt

What is the most important factor for habitable planets?

• The size of the planet

• The type of star

• The distance from the sun

• The number of moons

So which is better for a habitable planet: massive bright stars, or small dim stars?

• Massive bright stars

• Small dim stars

Are extremes conducive to habitability?

• Yes

• No

Tags

NGSS.HS-LS4-4

True or False: F-, G-, and K-class stars emit enough radiation to allow for the formation of a protective ozone layer and to power photosynthesis in plants.

• True

• False

Tags

NGSS.HS-ESS1-1

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the habitable zone?

• The area where a planet can have liquid water on its surface

• The area closest to the star

• The area farthest from the star

• The area where there is no water

What is the 'Goldilocks zone'?

• A) A region where it is too hot for life

• B) A region where it is not too hot and not too cold, allowing for liquid water

• C) A region where planets do not orbit

• D) A region where water always freezes

Tags

NGSS.MS-ESS2-4

If a planet leaves the habitable zone during its elliptical orbit, what could happen to the liquid water on the planet?

• It could vaporize if too close to the star

• It could freeze if too far from the star

• Both A and B

• Nothing would happen

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

What is the potential effect on life if a planet's water vaporizes or freezes due to leaving the habitable zone?

• The potential for life is reduced.

• The planet becomes more suitable for life.

• Life on the planet will flourish.

• The planet's gravity increases.

Tags

NGSS.HS-LS2-6