There would be no seasons. One Earth-year would be 14% longer. The Earth would spin at a different rate. Temperatures at the Earth's equator would cool.
I gave my students this multiple choice question: If the Earth did not tilt on its axis in relation to the sun, which of the following would also be true?

Only one answer is correct among these 4 choices:
- There would be no seasons.
- One Earth-year would be 14% longer.
- The Earth would spin at a different rate.
- Temperatures at the Earth's equator would cool.

Could you tell me which one is correct?

There would be no seasons.