Most common change to the Earths surface from internal forces would most likely be earthquakes and volcano eruptions. External forces could be considered meteor strikes, or possibly the effects of gravity on the oceans ( Tides ) Global warming is also melting glaciers and causing a growth in arid regions.
kapm
It covered exactly 25% of the Earths surface.
2/27/96 IS THE MOST IMPORTENT
The diameter of the earth at the equator is 12,756 kilometers. The earth slightly bulges at the equator slightly elongating the distance.
The Gupta Empire astronomers proved the earth was round by studying the moon during a lunar eclipse. They noticed that the earths shadow on the moon was round, meaning that the earth itself was round.
During the total history of the earth (over billions of years) there have been many changes to the climate. Most of these are reasonably well understood. For instance the sun becomes 10% brighter every million years. The atmosphere originally had a much higher concentration of CO2 than today which was fortunate because with a dimmer sun there would have been no liquid water without a major greenhouse effect. The development of plant life resulted in a reduction of CO2 and a build up of fossil fuels. We are now burning those fossil fuels which is increasing the greenhouse effect but we now have a much hotter sun, More recently there have been variations to the earths orbit and its orientation caused in part by the gravitational effects of Jupiter and Saturn. These minor variations caused major variations in earth's climate including the Ice Ages. This indicates that climate sensitivity is quite high, so that changes caused by increasing CO2 in the atmosphere are likely to be amplified rather than reduced as a result of feedback.
buthole
buthole
is mount novarupta responsible for any of earths surface changes
an earthquake
Earthquake.
Its Tectonic Activity
The Earths surface changes shape when plates collide when the earths surface overlaps or when there are Earthquakes.
due to volcanics effects and movement of earth which affect the earth surface
erosion glaciers and torndaoes
weathering, erosion, deposition
Plate tectonics
all ofthe changes on earth surface occur slowly