Accrete
Accrete is a term used in various scientific fields to describe the process by which matter accumulates and forms larger bodies. This term is commonly used in astronomy, geology, and biology.
Astronomy[edit | edit source]
In astronomy, accretion refers to the process by which celestial bodies such as stars, planets, and moons form and grow by the gravitational attraction of surrounding matter. This process is fundamental to the formation of planetary systems and stellar evolution.
Accretion Disks[edit | edit source]
An accretion disk is a structure formed by diffused material in orbital motion around a central body. These disks are commonly found around young stars, white dwarfs, neutron stars, and black holes. The material in the disk gradually spirals inward due to viscous forces, leading to the growth of the central object.
Planetary Accretion[edit | edit source]
Planetary accretion is the process by which planetesimals and protoplanets collide and stick together to form larger planetary bodies. This process is believed to have played a crucial role in the formation of the Solar System.
Geology[edit | edit source]
In geology, accretion refers to the process by which terranes or crustal blocks are added to a tectonic plate. This process can occur through various mechanisms, including subduction and continental collision.
Accretionary Wedges[edit | edit source]
An accretionary wedge is a mass of sedimentary material scraped off a subducting plate and accumulated onto the edge of the overriding plate. These structures are commonly found at convergent plate boundaries.
Biology[edit | edit source]
In biology, accretion refers to the growth of an organism by the gradual accumulation of additional layers or material. This process is observed in various biological systems, including the growth of bone and shell formation in mollusks.
Related Pages[edit | edit source]
- Astronomy
- Geology
- Biology
- Accretion disk
- Planetary accretion
- Accretionary wedge
- Tectonic plate
- Subduction
- Continental collision
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