MOY 2024 Review 7.8BCA, 7.9ABC

Front

What is the runaway greenhouse effect?

Back

A phenomenon where a planet's atmosphere traps heat, leading to a continuous increase in temperature, potentially vaporizing water and making the planet uninhabitable.

Front

What is eccentricity in relation to planetary orbits?

Back

Eccentricity measures how much an orbit deviates from being circular; a value closer to 1 indicates a more elliptical orbit.

Front

Why are most asteroids irregularly shaped?

Back

They have a weak gravitational pull due to their small size, which prevents them from forming into spherical shapes.

Front

What force keeps planets in orbit around the sun?

Back

Gravitational force, which attracts planets towards the sun and keeps them in motion.

Front

What two factors determine the gravitational pull of a planet?

Back

Mass and distance; greater mass increases gravitational pull, while greater distance decreases it.

Front

Define gravitational pull.

Back

The force of attraction between two masses, such as a planet and an object, which depends on their masses and the distance between them.

Front

What happens to water on Earth if the temperature rises significantly due to a runaway greenhouse effect?

Back

The water would vaporize, leading to a loss of liquid water and making the planet inhospitable.

Front

How does the size of an asteroid affect its shape?

Back

Smaller asteroids have weak gravitational forces, leading to irregular shapes, while larger bodies can become spherical due to stronger gravity.

Front

What is the significance of a planet's orbit being elliptical?

Back

An elliptical orbit means the distance between the planet and the sun varies, affecting the planet's climate and seasons.

Front

What is the relationship between mass and gravitational force?

Back

The gravitational force increases with the mass of the objects involved; more massive objects exert a stronger gravitational pull.