If the earth had twice its present mass, its orbital period around the sun (at our present distance from the sun) would be If the earth had twice its present mass, its orbital period around the sun (at our present distance from the sun) would be 2–√ years. 1 year. 12√ year. 12 year.

Earthquakes and volcanic eruptions are examples of rapid events that are caused by the movement of earth's mountain building is a much more slow process, which is caused by the movement of earth's a. ocean tides; crustal plates b. ocean tides; winds c. crustal plates; crustal plates d. crustal plates; ocean tides