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The three principal internal sources of heat for the terrestrial planets are;
- accretion,
- differentiation,
- radioactivity.
The first two mainly occur during the planets formation. Accretion, as gas, dust and smaller bodies collide to form the planet, generating heat on impact and differentiation. Differentiation is the process where the most dense outer material falls to the centre of the planet heating the core through friction during accretion. The source of the thermal energy is the gravitational potential energy which the extended mass had before accretion. The planet holds this heat for billions of years.
Radioactive material was present in the original accretion disk. The long lived radioactive elements decay for billions of years. (On Earth, these are potassium-40, uranium-238, uranium-235, and thorium-232.) This also contributes significantly to internal heating, as unstable radioactive nuclei split and release energy (fission).
What else can I help you with?
Describe the Earths principal sources of internal and external energy?
The Earth's principal sources of internal energy are radioactive decay of elements in the Earth's core and residual heat from the planet's formation. External energy sources include solar radiation, which drives processes like weather patterns, ocean currents, and ecosystems. Together, these energy sources contribute to the dynamic processes shaping Earth's geology and climate.
How are these words are related solar geothermal nuclear fossil fuel hydroelectric?
These words are all sources of energy. Solar, geothermal, nuclear, and hydroelectric are types of renewable energy sources, while fossil fuels are non-renewable sources of energy. Each of these sources can be used to generate electricity or provide power for various applications.
What are the principal sources of groundwater?
The principal sources of groundwater are rainfall and snowmelt that infiltrate the ground and percolate through soil and rock layers. Groundwater can also come from surface water bodies like rivers and lakes that recharge aquifers through infiltration. Additionally, groundwater can originate from artificial sources such as irrigation or leaking water supply systems.
What is the internal energy sources earth systems?
The internal energy sources of Earth's systems include geothermal energy, radioactive decay in the Earth's core, and heat generated from the planet's formation. These energy sources drive processes like plate tectonics, volcanic activity, and the Earth's magnetic field.
What are the two principal sources of heat in the Earth Which has a greater contribution tosurface heat flux?
The two principal sources of heat are the Sun and the Earth itself via geothermal heat. The sun's heat will vary more than geothermal, and therefore contribute more to flux.
What is terrestrial light?
Terrestrial light refers to the visible light that originates from sources on Earth, such as sunlight, moonlight, and artificial lighting. This term distinguishes Earth-based light from astronomical light sources like stars and planets.
Why do the outer planets still have an atmosphere?
Because gases exist even at great distances from the sun. Also the large gas planets have internal heating sources emitting from their core.
What is internal and external sources?
What is internal and external sources?
Describe the Earths principal sources of internal and external energy?
The Earth's principal sources of internal energy are radioactive decay of elements in the Earth's core and residual heat from the planet's formation. External energy sources include solar radiation, which drives processes like weather patterns, ocean currents, and ecosystems. Together, these energy sources contribute to the dynamic processes shaping Earth's geology and climate.
What are the sources of internal heat?
Main sources of internal heat are Magmatism and Radioactivity.
What are the sources of frustration?
external or internal sources
What are the five sources of background radiation?
The five sources of background radiation are cosmic radiation from outer space, terrestrial radiation from the Earth's crust and building materials, radon gas from soil and rocks, internal radiation from within our bodies, and medical sources like X-rays.
What are three of the natural sources that give off radiation?
- Radiation of cosmic origin- Radiation from radioactive elements (and decay products) of the Earth- Internal radiation of organisms
What is internal and external sources of information in marketing strategy?
Internal sources of information could be a database management system that is used by the company. Employees and management are also examples of internal sources of information. External sources are outside of the organization and harder and could include studies and market research.
Can anyone please give a few examples of internal and external sources of information?
internal sources are personnel, colleagues and the library whereas external sources can be consultants andservice providers and catalougues.
What are Internal Sources of Marketing Information?
entourage
Cosmic radiation and radiation from terrestrial sources are examples of?
Natural background radiation
