1/2 Fall24 Understanding Our Solar System

Front

What does Kepler's 3rd law state about the relationship between a planet's distance from its star and its orbital period?

Back

The farther the planet from its star, the slower it moves, resulting in a longer orbital period.

Front

What event did not contribute to making Earth's atmosphere more habitable?

Back

The formation of the moon.

Front

Which has a stronger gravitational pull: two low mass objects close together or two high mass objects close together?

Back

Higher mass objects closer together will have a stronger gravitational force.

Front

If a rock sample contains 25% uranium-238, how old is the rock?

Back

9,000 million years.

Front

How would you describe the shape of the orbits of the planets in the solar system?

Back

The orbits are nearly circular.

Front

What is the significance of the Great Oxidation Event in Earth's history?

Back

It significantly increased the amount of oxygen in the atmosphere, making it more habitable.

Front

What is the role of the magnetosphere in protecting Earth?

Back

It shields the planet from solar and cosmic radiation.

Front

What is the primary factor that determines the strength of gravitational force between two objects?

Back

The mass of the objects and the distance between them.

Front

What is the approximate age of Earth based on radiometric dating?

Back

About 4.5 billion years.

Front

What type of celestial body is a stromatolite?

Back

A layered structure formed by the activity of microorganisms, particularly cyanobacteria.