The ____ of an object is the amount of ____ that it contains. It is measured in ____. On Earth an object experiences a downwards force or has ____ which is numerically ____ times bigger than its mass. On the ____, however, the weight of an object is about one ____ its value on the ____ although its mass doesn’t change.Rockets can only take off if they overcome the ____ attraction of the Earth. In order for a rocket to accelerate, its ____ force must be ____ than its weight. As the rocket gets further away from the Earth a ____ upwards force is needed to produce the same acceleration because the weight of the rocket has ____. A ____ is an object that is in ____ around a much ____ object. It stays in its orbit because the bigger object exerts an ____ pull called ____ on it. The ____ is a ____ satellite of the ____, and the ____ is a natural satellite of the Earth. The international space station (ISS) is a inhabited ____ satellite that orbits Earth. Here ____ experience ____ because their bodies are falling towards Earth at the same ____ the space station falls too.

gravity gap fill

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