Mystery Science Stars and Planets Review

Front

What is the main reason Earth is considered a habitable planet?

Back

Earth is considered a habitable planet because it has liquid water and is at a good distance from the Sun.

Front

Why does the Sun appear brighter than other stars?

Back

The Sun appears brighter than other stars because it is much closer to Earth.

Front

Where will the Sun look the dimmest when traveling from Earth to Neptune?

Back

The Sun will look the dimmest at Neptune.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the Earth pulling us down.

Front

What happens to gravity on different planets?

Back

Gravity varies on different planets; for example, Creon has more gravity than Grumpia.

Front

What is a planet?

Back

A planet is a large celestial body that orbits a star and does not produce its own light.

Front

What is the solar system?

Back

The solar system is a collection of planets, moons, asteroids, comets, and other celestial bodies that orbit the Sun.

Front

What is the closest planet to the Sun?

Back

Mercury is the closest planet to the Sun.

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity, like the Sun.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates its own light and heat.