Astronomy Review AKS 5

Front

What is a heliocentric model?

Back

A heliocentric model is a representation of the solar system where the Sun is at the center, and the planets, including Earth, revolve around it.

Front

What are the inner planets?

Back

The inner planets are Mercury, Venus, Earth, and Mars. They are smaller, rocky, and have higher densities compared to outer planets.

Front

What are the outer planets?

Back

The outer planets are Jupiter, Saturn, Uranus, and Neptune. They are larger, gas giants, and have lower densities compared to inner planets.

Front

What is gravity?

Back

Gravity is the force that attracts two objects towards each other. It keeps planets in orbit around the Sun and moons in orbit around planets.

Front

What happens to planets without gravity?

Back

Without gravity, planets would float off into space and not maintain their orbits.

Front

How long does it take for Earth to complete one rotation?

Back

1 rotation of Earth takes approximately 24 hours, which is equal to 1 day.

Front

What is the difference in density between inner and outer planets?

Back

Inner planets are denser than outer planets, which are less dense and made mostly of gases.

Front

What is the role of the Sun in the solar system?

Back

The Sun provides light and heat, and its gravitational pull keeps the planets in orbit around it.

Front

What is an orbit?

Back

An orbit is the path that an object takes as it revolves around another object in space due to gravitational forces.

Front

What is the significance of the Earth's rotation?

Back

The Earth's rotation is responsible for the cycle of day and night.