Planets spin on their axis.

Meaning: This sentence explains the rotational motion of planets around their own axis, which causes day and night.

Choice of Words: Planets are celestial bodies that orbit stars. "Spin" means to rotate on an axis. "Axis" is the imaginary line that passes through the center of a planet and around which it rotates.

Alternative Expressions

Planets rotate on their axis.

Meaning: This means the same thing as "Planets spin on their axis." Both sentences describe the movement of planets as they turn on an imaginary line that goes through their center.

Choice of Words: Planets are round objects that go around the sun. Rotate means to turn around and around. Axis is an imaginary line that goes through the middle of a planet from the top to the bottom. So, when we say "Planets rotate on their axis," we mean that the planets are turning around and around on an imaginary line that goes through their middle.

Planets turn on their axis.

Meaning: This is another way to describe the movement of planets as they spin or rotate on their axis. It means that the planets are constantly moving and turning on an invisible line that goes through the center of the planet.

Choice of Words: Planets are round objects that go around the sun. Turn means to move around and around. Axis is an imaginary line that goes through the middle of a planet from the top to the bottom. So, when we say "Planets turn on their axis," we mean that the planets are moving around and around on an imaginary line that goes through their middle.

Related Expressions