gravitational potential energy
Nuclear fusion of hydrogen into helium.
The primary source of the sun's energy is nuclear fusion. This process occurs in the sun's core, where hydrogen atoms combine to form helium, releasing vast amounts of energy in the form of light and heat.
The source of the sun's energy is nuclear fusion, which occurs in its core. This process involves the fusion of hydrogen atoms to form helium, releasing a tremendous amount of energy in the form of light and heat.
A protostar's energy source primarily comes from gravitational contraction. As the gas and dust in a molecular cloud collapse under gravity, they form a dense core that heats up due to the increasing pressure. This process generates thermal energy, which raises the temperature of the protostar. Eventually, when the core temperature becomes high enough, nuclear fusion of hydrogen into helium begins, marking the transition to a main sequence star.
The original source of solar energy is nuclear fusion reactions in the core of the sun. These reactions produce vast amounts of energy in the form of heat and light, which is then radiated outwards into space. This energy travels through space and reaches Earth in the form of sunlight.
The initial source of energy on Earth primarily comes from the sun through nuclear fusion. The sun releases energy in the form of light and heat, which drives various natural processes on Earth, like photosynthesis in plants.
Nuclear energy requires an external source of energy to initiate the nuclear fission or fusion reactions that produce energy. This initial energy input is typically in the form of electricity or another type of fuel to start the chain reaction.
source
Photosynthesis begins when sunlight is absorbed by chlorophyll in plant cells. The initial steps involve capturing light energy and converting it into chemical energy in the form of ATP and NADPH. This process is known as the light-dependent reactions, which take place in the thylakoid membranes of chloroplasts.
Mechanical Waves
They give of energy in the form of light.
The most basic source and form of energy is from the sun, solar energy.
source
The Sun
The energy needed to form a wave is sourced from a disturbance or vibration in a medium such as water or air. This initial energy input causes particles in the medium to oscillate, which then propagates as a wave. This can be from sources like wind, seismic activity, or an object disturbing the surface of the medium.
When a heat source loses energy, the energy is transferred to the surroundings in the form of heat.
The source of energy for photosynthesis is sunlight, which is converted into chemical energy in the form of glucose. In contrast, the source of energy for cellular respiration is glucose, which is broken down to release chemical energy in the form of ATP.