The Cycling of Energy Chapter 3-3 Study Guide What is heat flow? The transfer of energy from a warmer object to a cooler object What occurs only when the atmosphere is cooler that the geosphere? conduction What is the major source of energy for Earth’s system? The sun What is the definition for: Radiation The process by which heat from the sun is transmitted to Earth What is the definition for : Convection current? The process by which most heat energy from Earth’s interior reaches the surface What is the definition for: Electromagnetic Spectrum The full range of wavelengths of radiation, including visible light, infrared waves & radio waves Name the process by which most hear energy from Earth’s interior reach the surface convection What is transferred through Earth’s system by convection and conduction? Thermal energy Name what can form in the geosphere and carry hear from Earth’s mantle toward the surface. Convection currents.