Kinetic and Potential Energy
Grade 8 · Science · Energy and Waves · Wyoming, USA
Lesson Summary
Learn the difference between energy of motion and stored energy.
Explanation
Kinetic energy is the energy an object has because it is moving. The faster it moves or the more mass it has, the more kinetic energy it carries. Potential energy is stored energy based on position or condition. A ball at the top of a hill has gravitational potential energy because it could roll down. A stretched rubber band has elastic potential energy. Energy constantly shifts between these two forms in everyday situations.
Practice Questions
Q1: A roller coaster is at the very top of its track. What type of energy does it mostly have?
Answer: Gravitational potential energy, because it is at its highest point and has not yet started moving fast.
Q2: As the roller coaster races down the hill, what happens to its energy?
Answer: Its potential energy converts to kinetic energy as it loses height and gains speed.
Q3: Which has more kinetic energy: a truck moving at 30 mph or a bicycle moving at 30 mph?
Answer: The truck, because it has much more mass, and kinetic energy depends on both mass and speed.
People Also Ask
What is Kinetic and Potential Energy in Grade 8 Science?+
Kinetic and Potential Energy is a lesson in the Energy and Waves chapter of Grade 8 Science. It is part of the Wyoming, USA school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Kinetic and Potential Energy?+
Kinetic and Potential Energy is taught in Grade 8 as part of the Science curriculum in Wyoming, USA.
How can I help my child with Energy and Waves in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Energy and Waves topics.