The Earth Without the Moon
There are many ways the moon could end Earth, a giant asteriod could hit the moon and obliterate it causing thoushands about thousands of meteors to rain on Earth. The moon could also be knocked into Earth by a big enough asteroid. The moon could even knocked away from Earth causing it to be gone forever.
An asteroid hitting the moon isn't out of the question. NASA has documented hundreds of space rocks hitting the moon. The red square indicates a rock that hit on March 17, 2013. The rock was about 1ft in diameter and traveling around 56,000 mph.
Without the moon there would be no tidal currents causing places that are usually flooded because of tides to become dry. There would also be no transfer of warm ocean water from the equater to the poles causing climate change.
Without the moon, Earth wouldn't be the stable planet that it is now. The moon keeps the Earth from rotating uncontrollably
Life on earth without the moon
The moon is naturally moving away from earth at a rate of about 1.5 inches per year. This is due to the moons gravitational force tugging on the earth. The moon streaches the Earths a little bit causing the Earth to become closer to the moon. This added kinetic energy to the moons orbit causing the moon to mover every so slightly away from the Earth each year.
What If We Detonated a Nuclear Bomb on the Moon?
The moon's surface area is about 14.6 million square miles and is about 2,159.2 miles in diameter,that is a little less than the distance between New York and Las Vegas. A rock that size crashing into Earth would be devastating.