According to the planetesimal theory developed by T. C. ... The tidal theory, proposed by James Jeans and Harold Jeffreys in 1918, is a variation of the planetesimal concept: it suggests that a huge tidal wave, raised on the sun by a passing star, was drawn into a long filament and became detached from the principal mass.
What is the planetesimal theory?
The planetesimal theory is a theory on how planets form . ... According to the planetesimal hypothesis, when a planetary system is forming, there is a protoplanetary disk with materials from the nebulae from which the system came. This material is gradually pulled together by gravity to form small chunks.
What is the meaning of tidal theory?
1 : a theory of the evolution of a celestial body that is based on the action of tidal forces specifically : such a theory explaining the moon’s evolution. 2 : the theory of the present ocean tides.
What is jeans Jeffrey’s tidal theory?
Quick Reference. Theory of the origin of the solar system, involving the approach near the Sun of another star. This set up tidal forces, and the instability of the Sun resulted in part of its mass being torn off to form the planets . The theory was proposed by Sir James H. Jeans (1877–1946) and Sir Harold Jeffreys.
What is the origin of tidal theory?
tidal theory Theory of the origin of the solar system, involving the approach near the Sun of another star . This set up tidal forces, and the instability of the Sun resulted in part of its mass being torn off to form the planets. The theory was proposed by Sir James H. Jeans (1877–1946) and Sir Harold Jeffreys.
What is an example of planetesimal?
Many Moons
Many of the moons orbiting planets are considered planetesimals. ... One of Saturn’s 53 moons , Phoebe, is a planetesimal, as well as both of Mars’ moons, Phobos and Deimos. In addition, Jupiter has 50 moons, and several of these match the criteria for planetesimals.
What is the difference between planetesimal theory and tidal theory?
According to the planetesimal theory developed by T. C. ... The tidal theory, proposed by James Jeans and Harold Jeffreys in 1918, is a variation of the planetesimal concept: it suggests that a huge tidal wave, raised on the sun by a passing star, was drawn into a long filament and became detached from the principal mass.
Who proposed planetesimal theory?
Thomas Chrowder Chamberlin, (born Sept. 25, 1843, Mattoon, Ill., U.S.—died Nov. 15, 1928, Chicago), U.S. geologist and educator who proposed the planetesimal hypothesis, which held that a star once passed near the Sun, pulling away from it matter that later condensed and formed the planets.
Who proposed nebular theory?
Solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation. Swedish philosopher Emanuel Swedenborg in 1734 proposed that the planets formed out of a nebular crust that had surrounded the Sun and then broken apart.
What are the four different types of Tides?
- Diurnal Tide. ••• A diurnal tide has one episode of high water and one episode of low water each day. ...
- Semi-diurnal Tide. ••• A semi-diurnal tide has two episodes of equal high water and two episodes of low equal water each day. ...
- Mixed Tide. ••• ...
- Meteorological Tide. •••
What is the basic assumption of jeans Jeffrey tidal theory?
(c) The produced protoplanets orbit the Sun with high eccentricities. The Jeans-Jeffreys tidal hypothesis, championed by James Jeans and Harold Jeffreys, explained the origin of the solar system as a result of a close encounter between the Sun and a second star.
Why are terrestrial planets rocky?
The temperature of the early solar system explains why the inner planets are rocky and the outer ones are gaseous. ... The inner planets are much smaller than the outer planets and because of this have relatively low gravity and were not able to attract large amounts of gas to their atmospheres.
What is the modern nebular theory?
Currently the best theory is the Nebular Theory . This states that the solar system developed out of an interstellar cloud of dust and gas, called a nebula . ... The Sun-to-be collected most of the mass in the nebula’s center, forming a Protostar .
What is the difference between nebular and tidal hypothesis?
According to Nebular hypothesis, the sun and the planets were formed from a large whirling cloud of hot gases and dust. ... According to the tidal hypothesis, a passing star had exerted a tidal pull upon the sun but the effect was to cause a long filament of gases to be drawn from the sun .
What is the difference between planet and planetesimal?
is that planetesimal is (astronomy) any of many small, solid astronomical objects, that orbit a star and form protoplanets through mutual gravitational attraction while planet is (astronomy) a body which orbits the sun directly and is massive enough to be in hydrostatic equilibrium (effectively meaning a spheroid) and ...
What is Jovian time?
Given the fact that it is the largest planet in the Solar System, one would expect that a day on Jupiter would last a long time. But as it turns out, a Jovian day is officially only 9 hours, 55 minutes and 30 seconds long , which means a single day is just over a third the length of an Earth day.
