energy flow and matter cycles adapted by ccps.k12.va.us

Energy Flow and Matter Cyclesadapted by ccps.k12.va.us

Objectives

• Discuss energy flow through different ecosystems

• Trace cycles of Carbon, Nitrogen, and water

Ecosystem

All the energetic interactions and material cycling that link organisms in a community with one another and with their environment

Energy and Production

Laws of Thermodynamics

Energy is not created or destroyed. It changes form and place

When energy changes form some of it is lost as heat

Photosynthesis

Chemosynthesis

Compare and Contrast

Food Chains and Food Webs

Definitions

Food Chain– series of steps by which energy stored in plants is passed through an ecosystem

Fig. 5.14

Components

• Producers – plants

• Herbivores – convert plant tissue into animal tissue

• Carnivores – eat other animals, levels

• Omnivores – eats both plants and animals

Components

• Scavengers – animals that eat dead plant and animal matter

• Saprophytes – plant and fungi that absorb dead material

• Decomposers – everything is a decomposer

Matter Cycles

Law of Conservation of Mass

Water Cycle

http://www.ndhealth.gov/wq/sw/z1_nps/images/H2O_cycle.gif

Carbon Cycle

• Fig 5.16

Carbon Cycle

http://eo.ucar.edu/kids/green/cycles6.htm

Nitrogen cycle

• Fig. 5.17

Nitrogen cycle

http://www.realtrees4kids.org/sixeight/cycles.htm

►Compare and Contrast: Water vs. Carbon and Nitrogen vs. Carbon►How are all of these cycles alike?

►How does water, carbon and nitrogen enter into the earth’s atmosphere?

►How does water, carbon and nitrogen leave the earth’s atmosphere?►Where are each of these stored?

►Predict: If fuels are burned and released into the atmosphere, how does carbon dioxide effect plant growth?

►What are 3 forms of water in the water cycle?