Front

What is the lifespan of smaller (less massive) stars compared to larger stars?

Back

Smaller (less massive) stars have a much longer lifespan than larger stars.

Front

What are large bodies made up of rock, water, gas, and/or other substances that revolve around a star?

Back

Planets.

Front

What is a 'star nursery'?

Back

A large cloud of gas and dust called a stellar nebula.

Front

List three planets and Earth’s Moon in order of increasing equatorial diameter.

Back

Earth’s Moon, Mercury, Mars, Earth.

Front

How does the size and density of the Moon compare to Earth?

Back

The Moon has a smaller diameter and lower density than Earth.

Front

What is a stellar nebula?

Back

A stellar nebula is a large cloud of gas and dust where stars are formed.

Front

What is the primary difference between terrestrial planets and gas giants?

Back

Terrestrial planets are rocky, while gas giants are composed mostly of gases.

Front

Name the four terrestrial planets in our solar system.

Back

Mercury, Venus, Earth, Mars.

Front

What is the main component of the Sun?

Back

The Sun is primarily composed of hydrogen and helium.

Front

What is the significance of the equatorial diameter of a planet?

Back

It helps determine the size and gravitational pull of the planet.