Standards

3.P.1 Understand motion and factors that affect motion.

3.P.1.1 Infer changes in speed or direction resulting from forces acting on an object.

3.P.1.2 Compare the relative speeds (faster or slower) of objects that travel the same distance in different amounts of time. 3.P.1.3 Explain the effect of Earth’s gravity on the motion of any object on or near the Earth.

3.P.3.1 Recognize that energy can be transferred from one object to another by rubbing them against each other.

Essential Questions

• How do forces cause objects to move? (3.P.1)

• What are some everyday examples of forces causing objects to change speed? direction? (3.P.1.1)

• How are speed, distance, and time related? (3.P.1.2)

• How does gravity affect the motion of objects on or near Earth? (3.P.1.3)