Prepared hands-on materials, full year grade-specific curriculum, and personalized live professional development designed to support mastery of current state science standards.
Warming Up
Mariana forgot her gloves one morning. Her hands got cold. She rubbed them together quickly. Before long, her hands started to warm up.
Mariana’s hands became warm because of a force called friction. Friction occurs whenever two objects rub against each other.
Motion Energy
Friction turns motion energy into heat. Energy is the ability to do work. Work is any change in position, speed, or state of matter due to force.
All moving objects have energy. You use energy to rub your hands together. When you stretch a rubber band, you use energy to move your hands apart. This stores energy in the stretched rubber band. That energy changes back to motion energy when you release the rubber band.
Energy and Forces
Energy is needed to provide force. If a rubber band is stretched enough, it has the energy to provide enough force to move an object.
When you rub your hands together, each hand pushes on the other hand. These are action-reaction forces. The more force you use to rub your hands together, the more energy you use.
KnowAtom incorporates formative and summative assessments designed to make students thinking visible for deeper student-centered learning.
Discover hands-on screens-off core science curriculum for student centered K-8 classrooms. KnowAtom supports classrooms with all hands-on materials, curriculum, and professional development to support mastery of the standards.
