Motion and Variables Exploring Motion Forces Gravity _________________ and _________________ are _______________. Forces make things__________________. When something moves we say it is in __________________. A force can be used to ________________ motion and _______________. Gravity ________________ is a pulling _______________ between two objects. Gravity draws objects ___________________each other. The _________________ the objects, the _______________ the gravitational force.

Controlled Experiments ____________________ Galilei was among the first modern scientists to perform _______________________________ In a controlled experiment the scientist must pay close attention to the__________________________. Variables There are three kinds of variables in a controlled experiment. 3 Types of Variables: ________________________

Independent Variable Dependent Variable Controlled Variables The _______________________ variable is the variable you ___________. Example: ______________________________________________________________ Dependent Variable The ___________________ variable is the what you _____________by doing the investigation. Example: _____________________________________________________________ Controlled Variables The __________________ variables are what must stay the __________ during the investigation. Example: _____________________________________________________________