Our science teacher told us today that the moon is trying to get away from the Earth's atmosphere and one day going to go far . Is this true ? Also, if you lose the moon what will happen to the tides of the ocean ?
Q1 . No.
It is quite complicated .
Bear with me .
Currently , the moon is tidally locked , and through kinetic energy transfer ( from Earth to the moon ) the moon is moving away from Earth .
This will continue until the Earth is tidally locked to the moon - in other words , the day of the Earth has slowed to match the orbital period of the Moon .
Of course , this will take some time .
During this time the moon will be experiencing delays of interplanetary gas - give a few million years , and no more angular momentum to be transferred from the Earth , the Moon will spin again .
Going to hit the Roche limit and Earth ( or what passes for the Earth in 10 ^ 9 years ) have a pretty ring around.