Planets rotate on their own axes.

Meaning: This sentence explains how planets spin on their own imaginary lines called axes.

Choice of Words: Planets are large objects that orbit stars. Rotate means to turn around on an axis. Axes is the imaginary line that an object spins around.

Alternative Expressions

The Earth spins on its axis.

Meaning: This means that our planet is spinning all the time, which is why we have day and night. When it's daytime on one side of the Earth, it's nighttime on the other side.

Choice of Words: The Earth is our planet. Spins means to turn around and around. Axis is an imaginary line that runs through the center of the Earth from the North Pole to the South Pole. When we say that the Earth spins on its axis, we mean that it turns around and around on this imaginary line.

The planets in our solar system all rotate on their own axes.

Meaning: This means that all the planets in our solar system are spinning around their own invisible center lines. It's like when you spin a basketball on your finger, except all the planets are spinning all by themselves in space.

Choice of Words: Planets are large, round objects that orbit the Sun. Solar system is the group of planets, moons, asteroids, and comets that orbit the Sun. Rotate means to spin or turn around an axis. Axes are imaginary lines that run through the center of a planet from pole to pole. When we say that the planets in our solar system all rotate on their own axes, we mean that they all spin around their own imaginary lines from pole to pole.

Related Expressions