Middle School

6th Grade

7th Grade

8th Grade

Forces and Motion - Discovery.com Students will understand the following: * Gravity is the force of attraction that causes objects to fall toward the center of the earth. * Air resistance, or air friction, can slow down the acceleration of a falling object. * The area “fronting the wind” affects the amount of air resistance a falling object encounters. * Terminal speed is the speed at which the downward pull of gravity is balanced by the equal and upward opposing force of air resistance for a falling object. FreeFall Lab - ExploreLearning.com Introduction to Erosion at Geology for Kids