With respect to matter, Earth is a closed system and with respect to energy, Earth is an open system.
solar energy
DOpen
Geothermal energy is the energy source that transforms heat energy from the Earth into mechanical and electrical energy. This process involves harnessing heat from beneath the Earth's surface to generate power through the use of geothermal power plants.
The primary energy source for life on Earth is the sun. Through the process of photosynthesis, plants convert sunlight into chemical energy that is then used by plants and ultimately other organisms for survival and reproduction.
The sun generates electromagnetic energy in the form of sunlight. This energy travels through space and reaches Earth in the form of solar radiation. Solar energy is essential for life on Earth and is harnessed for various purposes, including producing electricity through solar panels.
Quasars
Earth is a planet, not a solar system.
mass
solar energy
geothermal
The kind that's bad for our Earth. :(
geothermal
The energy from the Sun, solar energy drives all the process important to life on Earth.
mainly solar energy, which is derived from (at present) atomic fusion. There is also gravitational energy, and while on that idea, the rotational energy of the planets etc is conserved. Radioactivity is also present, and some of this was created from before the time Earth was formed.There is also the kinetic energy of the solar system as a whole moving through space,
calorieA calorie is kind of a synonym for energy in terms of exercise.
Gravity
You'd have a geocentric system.