Types of Kinetic Energy Grade 4 Standard 5

Types of Kinetic Energy Grade 4 Standard: 5. 2. 4. C. 1 Physical Science Objective: Compare different forms of kinetic energy and describe their applications in everyday life.

Forms of Kinetic Energy Definition Light (Radiant) Heat (Thermal) Sound Electrical Motion

Definition • Type of energy produced due to motion • The “energy of motion” • Stored energy transfers to kinetic energy • Movement of various objects • KE = mv 2

Heat (Thermal) • Vibration and movement of atoms/molecules • Motion of particles in matter • Thermal energy felt in form of heat • Thermal energy causes particles to move/collide faster • Ex: Geothermal is the energy in the Earth

Electrical • Movement of charged particles/electrons (+ and -) • Cannot be seen • Usually transfers energy through a wire • Lightning is electrical energy in nature • Usually transformed into light/heat energy

Light (Radiant) • Electromagnetic radiation of visible light • Comes from the Sun in nature • Also called luminous energy • Essential for life on Earth • Important part of photosynthesis

Sound • Movement of energy in longitudinal waves • Vibration occurs - energy transferred in waves • A weaker form of energy • Waves contain various frequencies • Travel through mediums before reaching ears • Dogs hear higher frequencies than humans

Motion • Energy stored in movement of objects • The faster the objects move, the more energy is stored • Motion energy of a car is released in a car crash • Ex: Wind • Wind is form of renewable electricity