Earth’s Cycles

1. Water Cycle or Hydrologic Cycle

Water Cycle or Hydrologic Cycle Evaporation Condensation Precipitation Transpiration Runoff Groundwater

2. Carbon Cycle Carbon is the building block of life. It is found in all organic material.

a. Identify in the following diagrams whether carbon dioxide is absorbed or released. b. Identify if the process is natural or man-made. Phytoplankton in the ocean Decomposing plants

3. Energy Cycle Earth’s Sources of Energy

What is the source of each of these? Solar over 99% Nuclear Energy-fusion Geothermal.013 % Earth’s internal heat-radioactivity from fission Tidal Energy.002% Gravitational pull of the moon

There is a balance of energy reaching the earth and leaving the earth.

When the energy balance is unbalanced. What happens if too much energy is retained? Global temperatures increase What happens if too much energy leaves the earth’s spheres? Global temperatures decrease

Laws of Thermodynamics- explains the conversion of heat energy into other forms of energy. What are other forms of energy? sound potential kinetic heat light

First Law of Thermodynamics Energy can not be created or destroyed, but transferred from one form to another. Conservation of Energy

Second Law of Thermodynamics Energy changes from more concentrated, more useful forms to less concentrated less useful forms. Example-Food chain, as you move up the food chain there is less energy available as it changes form.

Review 1. Hydrologic (water) Cycle Know the parts 2. Carbon Cycle Know what absorbs or produces carbon dioxide. 3. Energy- Sources of energy Energy balance Laws of thermodynamics

Develop 3 questions-One (1) from each of the three topics on the previous slide. (Use a separate sheet of paper) Here are some question starters to help you. Also provide answers to your questions. (see the next slide as well) What would happen if….? What could be done to minimize…? Can you predict the outcome…..? Can you identify the different parts….? What is the function of……?

3 questions continued Can you assess the value or importance of …? Based on what you know, how would you explain….? Can you select….? How would you compare/contrast…? What examples could you find to…..?