Catalyst: Answer the following questions silently in your binder. Raise your hand if you have a question.

Copy the following quiz question onto your catalyst.

1. Underline the question and put a box around the important information.2. Eliminate all incorrect answers. For at least one choice you eliminate, explain WHY in one sentence.3. Circle the correct answer and explain WHY it is correct.

Quiz!1. Write your name, date, and class period at the top of your quiz.

2. To receive credit, you must underline the question and put a box around any important information.

3. Before you hand in your quiz, you must ask at least 1 question.

4. When you finish, take out your proposal for your project. SILENTLY switch with another student and write them a short note with your comments, questions, and suggestions.

Good Luck!

What do these pictures have in common?Carbon

cycle

Watercycle

Nitrogencycle

FOCUS

6d.1 - I can illustrate the importance of biogeochemical cycles by drawing diagrams of the water, carbon, nitrogen,

and oxygen cycles and labeling areas of human impact.

Check for prior knowledge

!

1.   What  is  evapora/on?2.   What  is  condensa/on?3.   What  is  precipita/on?

   4.  What  is  one  word  or  part  of  the  diagram  you  do  not  know?

Instructions: work individually to write down your answer to each of the four questions below. If you are

not sure about a question, just skip it.

Introduction to water cycle activity

1. As you are listening to the introduction, read along silently. 2. Circle any words you do not know. 3. At the end of each paragraph, write the most important idea in the margin.

How much is a ton of CO2?

• 1 gallon of gas weighs ~6 lbs; burning it produces ~5 lbs of CO2

• 1 ton is 2200 pounds (367 gallons of gas)

• 45 million tons of CO2 means 16,500,000,000 gallons of gas

• Picture a swimming pool the size of a football field that is 31 miles deep

Matter cycles

Energy Flows

Matter - any physical substance

Law of conservation of mass: matter is neither created nor destroyed

- mass can change forms ex.: from oxygen in a water molecule to oxygen in the air

Law of conservation of energy:energy is neither created nor destroyed

- energy can change forms - ex.: from chemical energy in food to heat energy; heat leaves the Earth

!

Other biogeochemical

cycles

Nitrogen cycle- protein in organisms- N2 in the air (78% of air)- bacteria convert nitrogen

Carbon cycle- carbohydrates in organisms- CO2 in the air - stored in ocean and rock

N - 78C - 77

How do photosynthesis

and cellular respiration

contribute to nutrient cycles?

6 CO2

6 H2O

6 O2

PhotosynthesisProducers only

Cellular respirationAll organisms

Synthesize the CyclesWorking in pairs/trios, label all of the biogeochemical cycles on

a single drawing.

Use BLUE for the water cycle.Include evaporation, condensation, precipitation, transpiration, runoff, and acid rain

Use RED for the carbon cycle.Include photosynthesis, cellular respiration, decomposition, and human activity

Use GREEN for the nitrogen cycle.Include bacterial nitrogen fixation, denitrification, and fertilizer

Use ORANGE for the oxygen cycle.Include cellular respiration and photosynthesis

Exit Slip1. Explain the phrase “energy flows while matter cycles.”

2. Why are producers and decomposers essential for matter cycling?

3. Give one similarity between the water, carbon, and nitrogen cycles. Then give one difference for each cycle.

4. How are photosynthesis and cellular respiration involved in the water and carbon cycles?

5. How do humans impact the water, carbon, and nitrogen cycles?