why do we call earth an active planet

The Earth is a planetary body with an active interior that keeps it in a state of perpetual change: gradual over the course of eras but violent and sudden on much shorter timescales. The Sun drives the weather and the hydrological cycle. This activity redistributes vast amounts of heat and fresh water across the planet s surface. It also erodes mountain chains and deposits sediments, continuously shaping the Earth s outer surface. The mass of the Sun and the Moon generate the tides, and the Sun s energy powers the ocean currents, whose massive masses of water carry heat, oxygen, and nutrients across 70 percent of the Earth s exterior.

The biosphere is a source of activity on Earth that is unique among the planets that are currently known. A multitude of life forms interact with the lithosphere, the atmosphere, and the hydrosphere. The activity of early life forms changed the composition of the atmosphere with dramatic effects for the future development of life. In the present, our species is the life form with the largest effect on the outer shell of the planet. The impact of our activities is now such that their consequences are long-lasting and felt globally, presenting us with questions and challenges that drive much of the scientific activity on display at the General Assembly.

The General Assembly 2016 aims to address some of the aspects of active planet in dedicated lectures, join-in activities, photo competitions, and through movies shown in the Geo Cinema. Antje Boetius : The active outer shell of Earth: What remains to be explored in carbon and life interactions? (
), Tue, 19 Apr, 13:30 15:00 / Room 0. 93 Cynthia Ebinger : The Active Solid Earth ( ), Tue, 19 Apr, 15:30 17:00 / Room 0. 93 Fran ois Forget : Active other worlds in the Solar System and beyond ( ), Thu, 21 Apr, 13:30 15:00 / Room 0. 93 Berit Arheimer : The active liquid Earth importance of temporal and spatial variability ( ), Thu, 21 Apr, 15:30 17:00 / Room 0. 93 Our Planet Earth!!!

Our Natural Satellite 1 0REarth's natural satellites are like the moon. Earth has one natural satellite. Our Artificial Satellite 2 0RArtificial satellites are like radio stations and TV channels. Earth has more than any other planet. Gravity 3 0RGravity is what holds you down on Earth and not just let you float in the air. Gravity depends on the atmosphere. Oceans 4 0RThe ocean almost covers rn (75%) of the Earth. Environment 5 Most of the Earth's land was full of trees and thousands of grasslands, but now there are mostly homes and businesses Size 6 Earth's diameter (distance around the Earth) is 12,756. 3 km Earth's Past 7 0REarth was full of dinosaurs and trees.

Can you tell me how Earth has changed? Earth's Future 8 0REarth, in time, will be horrible because trash will be all over the place. There might be hover crafts. Can you tell how it will change? Questions 9 0RHow many natural satellites does Earth have? How many unnatural ones? What shape is Earth? Questions. 10 0RWhat lived on Earth before us? How much water covers Earth? Can you tell me what you think will be on Earth after us? What will Earth look like?. THE END. from skm.

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