Why when we jump in the air the earth doesnt move

Question

So my 7 year old sister asked this so technically not but how can i explain it to her Edit:She means in like the earth spinning

In: 0

Answer 1

Every force has an equal and opposite force, so when you jump, the same force does, in fact, apply to earth. But the Earth is so large that the force applied from the jump is nowhere near enough to move the earth any measurable amount.