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A _____ can change the shape,speed or direction of something.
_______ is the force of attraction beween any two objects.
A force that pushes things up in liquids and gases is called ________.
_________ is a force that attracts objects made out of iron.
The hyaline cartilage covers the ends of bones to reduce ________ and absorb shock.
A ______ is the unit of force.
The ______ is the amount of force with which gravity pulls something towards the earth.
____ is the amount of matter that something is made of.
______ electricity is a force which attracts things when certain materials rub together.