Where does the matter making up living organism come from?VASUbhagwat said:why does it not change even when the population of the word has gone up by many folds , there have been new flora and fauna
DoItForYourself said:I have heard that the mass of Earth is increased a bit because of the debris coming from space (do not know exactly the extent of the increase).
Source: https://www.nasa.gov/mission_pages/asteroids/overview/fastfacts.htmlNasa said:Every day, Earth is bombarded with more than 100 tons of dust and sand-sized particles.
jim mcnamara said:http://geodesy.curtin.edu.au/research/resolution/
Check out the image on the first page. A really cool map of very local G values (short scale gravity field), demonstrating that G is not a constant value over Earth's surface. For example, it varies by latitude. The changes are small, BTW.
The first image shows the effect of mountain ranges in Asia, another image further down shows Ayers Rock.
The new flora and fauna are not additional mass.VASUbhagwat said:Mass of the Earth is 5.9 x 10^24 kg . How long has it been at this value and why does it not change even when the population of the word has gone up by many folds , there have been new flora and fauna . when was this last measurement taken?
Well I suppose everything is a rearrangement of existing atoms, and the mass of the Universe now is the same as at the moment of the Big Bang. [Sorry for being difficult].rootone said:The new flora and fauna are not additional mass.
They are just new arrangements of existing atoms, most of which are in organic molecules.
Those molecules are there as byproducts of previous flora and fauna which died.
No new atoms are being created, matter is being recycled
Sure, conservation of mass=energy is generally considered to be true.Ernest S Walton said:Well I suppose everything is a rearrangement of existing atoms, and the mass of the Universe now is the same as at the moment of the Big Bang. [Sorry for being difficult].
Ernest S Walton said:Well I suppose everything is a rearrangement of existing atoms, and the mass of the Universe now is the same as at the moment of the Big Bang. [Sorry for being difficult].
Actually energy is NOT conserved on cosmological scales and it does in fact disappear as EM waves lose energy due to the expansion of the universe.rootone said:Sure, conservation of mass=energy is generally considered to be true.
No new stuff appears from nowhere, and nothing mysteriously disappears.
Well granted, but apart from that, what has the universe ever done for us?phinds said:EM waves lose energy due to the expansion of the universe.
In the grand scheme of things ... well ... chocolate.rootone said:Well granted, but apart from that, what has the universe ever done for us?
Never trust atoms. They make up everything.rootone said:The new flora and fauna are not additional mass.
They are just new arrangements of existing atoms, most of which are in organic molecules.
Those molecules are there as byproducts of previous flora and fauna which died.
No new atoms are being created, matter is being recycled
Earth's mass is approximately 5.9x10^24 kg, which is equivalent to 5.9 followed by 24 zeros. This measurement is obtained using the Universal Gravitational Constant and Newton's Law of Universal Gravitation. Scientists use this formula to calculate the mass of any object with known weight and distance from the object's center of mass.
Throughout history, scientists have used various methods to measure Earth's mass. In the past, the most common method was through the use of pendulums, which allowed scientists to measure the gravitational pull of Earth. However, with advancements in technology, more accurate measurements can now be obtained using satellites and space probes.
The main factor that affects the measurement of Earth's mass is its varying gravitational pull due to its irregular shape and composition. The location of the measurement also plays a role, as the gravitational pull can differ depending on the altitude and location of the measurement. Additionally, external factors such as other celestial bodies and tectonic activity can also impact the measurement.
Knowing Earth's mass is crucial for understanding the dynamics and evolution of our planet. It allows scientists to calculate the force of gravity on Earth's surface, which affects everything from the ocean tides to the movement of celestial bodies. Earth's mass also plays a significant role in our understanding of the solar system and our place in the universe.
Earth's mass is relatively small compared to other planets in our solar system. Jupiter, the largest planet, has a mass of 1.9x10^27 kg, over 300 times that of Earth. On the other hand, Mercury, the smallest planet, has a mass of 3.3x10^23 kg, about 18 times smaller than Earth. Earth's mass is also significantly smaller compared to the sun, which has a mass of 1.989x10^30 kg.