Earth has internal energy due to radioactivity. I am not sure what you mean by radioactive external energy, or simply by external energy. Earth gets most of its energy from the Sun.
External process occur on the surface of the earth . It is slow change . Ex- change in leevel of the earth . Internal process occur inside the surface of the earth . It is sudden change . Ex -earthquake activities
geothermal energy
HAZE
pressure
The Earth's external heat engine is the Sun. It constantly emits light, heat, and energy which are absorbed by the Earth.
Energy can enter the earth system from internal sources through convection and from external sources through radiation from the Sun (solar energy).
solar energy
solar energy
External process occur on the surface of the earth . It is slow change . Ex- change in leevel of the earth . Internal process occur inside the surface of the earth . It is sudden change . Ex -earthquake activities
buthole
buthole
It comes from inside Earth, which is always very hot. The internal heat is due to a combination of factors. The two most significant are residual heat from Earth's formation and energy released by radioactive decay of certain isotopes inside the planet.
Radiant energy from the sun, kinetic energy and heat from the decay of radioactive material in the Earth's interior.
geothermal energy
Geothermal, originated from radioactive decay in the core and lower mantle.
Radioactive and solar energy (or light and heat).
pressure