Here’s an explanation of what would happen if the Earth did not rotate.

Effects of No Rotation
Without the Earth's rotation, several significant changes would occur:

1. Length of Days and Nights
- Days would last six months, followed by six months of night.
- This extreme duration would affect temperature and weather patterns.

2. Climate Changes
- The side facing the Sun would become extremely hot, while the dark side would freeze.
- Habitable zones would be drastically reduced.

3. Gravity and Weight
- The centrifugal force created by Earth’s rotation helps balance gravity.
- Without rotation, gravity would feel stronger at the equator, potentially leading to structural issues for buildings and living organisms.

4. Atmospheric Changes
- Wind patterns would be altered significantly due to the absence of the Coriolis effect.
- Weather systems would become more extreme, leading to unpredictable climate events.

5. Ocean Currents and Tides
- Ocean currents would be affected, leading to potential stagnation in some areas.
- Tides, influenced by the Moon, would also change, possibly becoming less pronounced.

6. Impact on Life
- Many species depend on day-night cycles for survival; their ecosystems would be disrupted.
- Photosynthesis in plants would be significantly affected, reducing food supply for various organisms.
In summary, if the Earth did not rotate, it would lead to extreme environmental changes, altering life as we know it.