The earth rotates or revolves around the sun is a great way to say some earth rotates or orbits.
You're close, but I'd be happy to help you fine-tune your sentence.

The earth rotates or revolves around the sun is a good start, but a more accurate and common way to phrase it would be:

"The Earth rotates on its axis and orbits the sun."

This sentence clearly conveys two separate concepts:

* "The Earth rotates on its axis" refers to the fact that the Earth rotates from west to east, causing day and night.
* "and orbits the sun" refers to the fact that the Earth moves in an elliptical path around the sun.

Alternatively, you could use the phrase "revolves around" instead of "orbits", which is also a common way to describe the Earth's movement around the sun. So, the sentence would be:

"The Earth rotates on its axis and revolves around the sun."

Both of these sentences accurately describe the Earth's movements in our solar system!