Effects of Dust on Planetary Climate

What is the main role of dust in making planets more suitable for life?

• Dust increases the planet's gravity.

• Dust deflects starlight, cooling the planet's surface.

• Dust makes the planet's surface rocky.

• Dust increases the planet's size.

What is a key requirement for a planet to be considered suitable for life?

• The planet must have a rocky surface.

• The planet must have liquid water on its surface.

• The planet must be larger than Earth.

• The planet must have a thick atmosphere.

What type of stars are most stars in our galaxy?

• Blue giants

• Red dwarfs

• Yellow dwarfs

• White dwarfs

What is a tidally-locked planet?

• A planet that rotates rapidly.

• A planet that has the same side facing its star at all times.

• A planet that has no atmosphere.

• A planet that is very far from its star.

What type of planet did the researchers use a climate model for, based on Earth's model?

• A tidally-locked planet orbiting a red dwarf

• A non-tidally locked planet orbiting a yellow dwarf

• A planet orbiting a blue giant

• A planet orbiting a white dwarf

What was the purpose of using a climate model in the study?

• To understand the movement of tectonic plates

• To assess the effects of dust on planetary climates

• To measure the gravitational pull of planets

• To calculate the speed of planetary rotation

What effect does dust have on non-locked planets according to the study?

• Dust increases the greenhouse effect

• Dust cools down the planets by deflecting starlight

• Dust causes the planets to rotate faster

• Dust makes the planets more reflective

What happens on the dark side of locked planets in terms of heating and cooling effects?

• The cooling effect is stronger than the heating effect

• There is no radiation, so the heating effect wins over the cooling effect

• The heating and cooling effects are balanced

• The cooling effect wins over the heating effect

What is the main effect of airborne dust on tidally-locked planets?

• It makes the planet uninhabitable.

• It cools the dark side and warms the day side.

• It widens the habitable zone by cooling the day side and warming the dark side.

• It has no effect on the planet's temperature.

Why might a planet with a lot of dust be mistakenly considered uninhabitable?

• Because dust makes the planet too hot.

• Because dust hides gases like oxygen, methane, and ozone.

• Because dust prevents water from evaporating.

• Because dust increases the planet's gravity.