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gravity

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jack75
845215.  Sun Sep 11, 2011 3:46 am Reply with quote

What will be the effect on life in general,when the Moon moves far
enough away not to have an interactive influence ? Tides etc.

Would earthquakes stop ?

 
soup
845228.  Sun Sep 11, 2011 4:20 am Reply with quote

Tides will stop but I can see no reason for earthquakes to stop. Magma will still flow and tectonic plates will continue to move. There will be more meteor strikes though as our "goalkeeper" will be so far away that a lot of 'space stuff' (technical term there) that was previously stopped/affected by the moon won't be and will impact earth.

 
exnihilo
845238.  Sun Sep 11, 2011 4:55 am Reply with quote

Wouldn't earthquakes stop? Much of our tectonic activity is caused by the stretching and compressing effect of the Moon on the Earth.

 
soup
845244.  Sun Sep 11, 2011 5:05 am Reply with quote

Heat dissipating from the mantle is the MAIN driving force for plate tectonics. Gravity is pretty much considered a secondary cause. However there is lots of debate about why things actually happen, but all sources seem to consider gravity as secondary.

 
jack75
845322.  Sun Sep 11, 2011 9:14 am Reply with quote

What is the Source of gravity ?

Heavy on Earth, non at Space station and little on the Moon.

 
soup
845373.  Sun Sep 11, 2011 1:10 pm Reply with quote

Gravity can be thought of as the attraction to an object depending on the mass of the something the mass of the thing being attracted and an inverse of the distance between them squared . so :-
close to a massive object = high gravity
Some distance from a small object = low gravity

 
bobwilson
845487.  Sun Sep 11, 2011 5:45 pm Reply with quote

jack75 wrote:
What is the Source of gravity ?



If you answer that question you'll probably be in line for a Nobel prize for Physics.

The currently accepted view is that it's a distortion in space-time - a bit like (in the popular version) putting a bowling ball onto a stretched rubber sheet.

 

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