There will be no oceans
Earth faults, which create earthquakes and also promote volcanoes, are the source of new crustal layers, and the subduction of older crust. As such, they bring new minerals to the surface, which can benefit the living organisms there.
No different at all except that for the same effort you would jump higher on the Moon
Yes it will be a flat boring circle
cos of the poles and the weather is different it would be weird if it was -2 in summer or 34 in winter
There might not be any mountain ranges, and the rocks on Earth's surface would be much older. There would also be far less volcanic activity, so there would be fewer igneous rocks.
The heat from inside Earth gets dissipated into space on the surface, so you would expect the surface to be colder than the inside, which is farther from the surface.Also, there are differences in heat transport inside Earth, simply because different parts of the Earth are made up of different materials.
Life on Earth has evolved to cope with the environment of earth. If the gravity were different it is very likely that life would look very different. It is likely that if the gravity differed by a large amount then life would not have evolved at all. Too heavy and Earth would have enormous amounts of hydrogen and would be a small gas giant. Too little and the earth could not keep hold of much of its atmosphere. As a result we would have far less CO2 and the surface would be much colder. Also we would loose our precious ozone layer and the surface would be bathed in solar radiation.
I would expect that the most rapid changes to the Earth's surface would result from the impact of a comet striking the Earth.
that would be from the Mantle. It creates hard rockthey are coposed by three different things
Yes, but it wouldn't spread.
like mars
yes