Lessons 2 & 3 Interactions between spheres & Earth’s Energy Budget Earth’s Spheres Lessons 2 & 3 Interactions between spheres & Earth’s Energy Budget

Main Ideas/Questions Describe how the Earth’s spheres interact Be able to give examples of interactions among Earth’s spheres Be able to define and identify the main source of energy in the Earth system Describe how Earth’s energy budget explains the flow of energy in the Earth system Explain how an unbalanced energy budget can affect Earth’s climate

Interactions between Spheres What is exchanged between the Earth’s spheres? Matter & Energy The biosphere and geosphere interact when byproducts of decaying organisms mix into soil and plants and take in nutrients from the soil. The atmosphere and hydrosphere interact when wind causes waves in the ocean.

Earth’s Energy Budget The Earth’s main energy source is the sun! Energy flows into Earth’s system as sunlight and escapes from Earth’s atmosphere as heat An unbalanced energy budget could increase or decrease global temperatures. Increased greenhouse gases can trap energy in the atmosphere, increasing temperatures Melting polar ice caps absorb more energy, increasing global temperatures.

Homework - Read pgs 12 – 15 in your text book Answer the following questions on a separate sheet of paper - #16 & 19 Create an “Earth Factory” Create your own factory that shows how different parts and processes that make up the Earth System work together. Draw a diagram to show the spheres of Earth as if they were components of a factory. The diagrams should have a label of each representation and include a description of the role of each component