Global Warming by: Christian Jose

Topics I.Glacier II.Glacial Ages III.Glacial and Interglacial stages IV.Plate Tectonics V.Variations in Earth’s orbits picturesofalberteinstein.com

Global Warming Term for the observed century-scale rise in average temperature of Earth’s Climate System Multiple scientific evidence shows that the climate system is warming increase of near-surface atmospheric temperature is the measure of global warming

What is a glacier? What are glacial ages? Fallen Snow Snow in one location Occupies 10% of earth’s total land area Also known as “Ice Age” Ice sheets and Glaciers exist period which long-term cooling takes place

What causes the alternation of glacial and interglacial stages? Atmospheric composition Decreases in atmospheric CO2, started the long-term cooling trend that led to glaciation. Ocean Currents Carries heat to high latitude areas

Plate Tectonics describes the large-scale motion of Earth's lithosphere Accepted geoscientific community after seafloor spreading was validated builds the concept of continental drift

Variations in Earth’s orbit eccentricity - Determines the amount by which its orbit around another body deviates from a perfect circle. Earth’s eccentricity is obliquity - Angle between the planes of earth's equator and orbit having a value of about 23° precession - Slow changes in an astronomical body's rotational or orbital parameters

Milankovitch cycle

What happens to life during ice ages? Plants Froze because of the cold temperature Animals Died because of the cold temperature, and loss of food source which is Plants Humans Died because of freezing temperature, and loss of food source which is plants and animals

References (Video) Images iew_of_Marjerie_Glacier.jpg iew_of_Marjerie_Glacier.jpg g g