Bell Ringer 10/26/09

I am a producer in an ecosystem.

Who/What am I?

Core Content SC-05-2.3.1 Students will:

ｷｷ describe the circulation of water (evaporation and condensation) from the surface of the Earth, through the crust, oceans, and atmosphere (water cycle);

ｷｷ explain how matter is conserved in this cycle.

Water, which covers the majority of the Earth’s surface, circulates through the crust, oceans, and atmosphere in what is known as the water cycle.

DOK 2

Today’s Agenda

Complete Bell Ringer Discuss bell ringer I can NotesAssignment

I can

I can describe the carbon cycle.

I can explain why the carbon cycle is important to humans.

What is the water cycle? The continuous movement of

water between Earth’s surface and the air is

the water cycle.

All water on Earth is recycled constantly.

groundwater

watershedprecipitation

condensation

transpirationevaporation

runoff

What is the carbon cycle?

The carbon cycle is the continuous exchange of carbon among living things.

CO2 in air

dissolvedCO2 in water

marine plankton remains

rock

respiration

decomposition

photosynthesis

coal natural gas

oil

combustion (human-made and natural)

What is the nitrogen cycle?

The nitrogen cycle is the continuous trapping of nitrogen gas into compounds in the soil and its return to the air.

nitrogen gas in air (N2)

nitrogen fixation

denitrification

absorptiondecomposition

ammonia nitritenitrate

What roles do plants play in the water, carbon, and nitrogen cycles?

Water cycle: Plants release water to the atmosphere through transpiration.

Carbon cycle: Plants turn carbon dioxide into carbon-rich foods.

Nitrogen cycle: Plants play a key role in housing bacteria that fix nitrogen and transform it into a usable form that other plants can build with.

Homework due on Tuesday

Diagram the carbon cycle.In which part of the carbon

cycle is carbon trapped for the longest time?

Write a brief summary of the carbon cycle. (1-2 paragraphs)

Exit question

Explain why the carbon cycle is important.