Presentation on theme: "The Earth System’s Four Spheres"— Presentation transcript:
1The Earth System’s Four Spheres After completing this section, students will be able to explain how Earth’s distance from the Sun and the Earth’s atmosphere produce temperatures that allow water to exist in a liquid state (Standard PI – 068)
2Earth is the only planet currently known to support life. Earth has: Water in all three states (liquid, solid and gas – water, ice and water vapor)Minerals needed for growth and developmentAir for breathingCorrect temperature for living things
3The Earth system consists of four spheres that interact with each other The atmosphereThe hydrosphereThe geosphereThe biosphere
5The atmosphere is a gaseous envelope surrounding the Earth. Composed of a mixture of gases (nitrogen, oxygen and carbon dioxide)Provides living things with oxygen and carbon dioxideProtects us from harmful solar radiation (ozone layer)Produces wind and weather
17All the living things on the planet compose the biosphere All the living things on the planet compose the biosphere. Interactions between the atmosphere, hydrosphere and geosphere produce conditions to support life.
18The four spheres are constantly moving, changing and interacting. Winds blowRocks form, break down and form againPlants and animals live, grow, die and decomposeWater moves from the rivers to the sea
19The four spheres interact with each other, everyday, all around us. Which spheres are interacting in the picture above?
20InteractionsGases enter the air (atmosphere) from the volcano (geosphere)Ash and lava will (geosphere) will cover the land and destroy crops (biosphere)Water vapor (hydrosphere) enters the air (atmosphere) from the volcano (geosphere)