SPACE
didn't talk about much today, coz a lot of it was talking about test papers.. however we did discuss a few things. mr pitt prosed a question about weightlessness.
weight is the force on an object depending on its mass and another object's (eg planet) gravity. eg. gravity on earth is 9.8, and radius is about 6400.
we had a discussion about how far earth's gravity goes. i said something stupid.. i said it extends as far as the atmosphere -.- because tahts the boundary in which things are held in, but then garner argued that gravity holds the moon in place too, and im like oh yeah.
mr pitt explained that the forces between the earth and the sun would be the same, because of newton's third law. now that makes sense considering planets dont just plummet into the sun coz it has epic gravity.
objects that are larger have stronger graivty, and so we orbit the sun, the sun doesnt orbit us, but we do make it wabble slightly
Higher mass = Higher Gravity (not size)
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