[TomO]

So when I was in 8th grade my science teacher was discussing physics with the class. He stated that the reason you move forward when you walk is because the Earth is pushing back on your foot as you push on the Earth. He also stated that when you drink from a straw, the air pressure outside of the straw is pushing on the liquid forcing it up the straw when you decrease the pressure within the straw.

I told this to a class of 5th graders at my work yesterday and they didn't believe me, lol.

It all makes sense though...For every action there is an equal and opposite reaction; you push on the Earth with your mass and the Earth pushes back with an equal force but since the Earth's mass is greater than your mass, you move.

I remember Asking my Science teacher a question after he said all this to us: "So what happens when I jump? Does the Earth move towards me?". He answered "Yes, but the movement is so minuscule that it cannot be measured".

So was he razzing us back then or what do you believe?