GENERAL GEOLOGY

Detailed explanation-1: -Despite our tendency to consider Earth as static, it is actually a dynamic and ever-changing planet. Wind, water, and ice erode and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner.

Detailed explanation-2: -Our restless Earth is always changing. Tectonic plates drift, the crust quakes, and volcanoes erupt. Air pressure falls, storms form, and precipitation results.

Detailed explanation-3: -Earth’s rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth’s rotation. Atomic clocks show that a modern day is longer by about 1.7 milliseconds than a century ago, slowly increasing the rate at which UTC is adjusted by leap seconds.

Detailed explanation-4: -The earth has changed a great deal over its long 4.5 billion year history. It has gone from a molten ball of elements to a layered rocky planet. Following the emergence of plants, an atmosphere rich in oxygen, supporting a lush green world, has replaced Earth’s early atmosphere of methane and carbon dioxide.