Properties of objects in the solar system

Front

What causes planets and stars to be round?

Back

Gravity pulls toward the center of the planet or star.

Front

How do the sizes of outer planets compare to inner planets?

Back

The outer planets are larger than the inner planets.

Front

What allows a planet to maintain its spherical shape while orbiting the Sun?

Back

The gravitational pull from the center of the planet retains its shape, while the Sun's gravitational pull keeps it in orbit.

Front

What are the four planets closest to the Sun called?

Back

The inner planets.

Front

What role does gravity play in the formation of planets and stars?

Back

Gravity keeps planets in orbit around the stars, helping them to form and maintain their shapes.

Front

What is the primary force that shapes celestial bodies in the solar system?

Back

Gravity.

Front

Name the two categories of planets in our solar system based on their distance from the Sun.

Back

Inner planets and outer planets.

Front

What is the main difference between inner and outer planets?

Back

Inner planets are smaller and rocky, while outer planets are larger and gaseous.

Front

How does gravity affect the orbits of planets?

Back

Gravity from the Sun pulls planets toward it, keeping them in a stable orbit.

Front

What is the significance of the gravitational pull of a planet's center?

Back

It allows the planet to maintain its spherical shape.