Carbon Cycle

1. What is a fossil?2. What is the difference between a

renewable and non-renewable resource?

3. Do you think fossil fuels are renewable or non-renewable? Explain your reasoning.

4. What is one disadvantage of using fossil fuels as our primary source of energy?

Write in complete sentences!

Don’t talk during the Catalyst!

Objectives

By the end of today, all SWBAT…

Identify the forms and sources of carbon

Describe the 6 steps of the carbon cycle, and how humans affect it

What’s good?

Catalyst Review Carbon! Steps of the carbon cycle

Musical chairs Independent practice

Exit question

Worksheet Pack from yesterday

Study Guide Quiz tomorrow!

AGENDA HOMEWORK

Intro Vocabulary

Carbon = an element that is found in all living/dead things

Fossil fuels = energy sources formed from the fossils of dead organisms Fossil fuels are made of carbon Examples: oil, coal, natural gas

Key Point #1: Carbon is found in different forms and different sourcesSources of carbon– Plants– Animals– Soil– Fossil fuels– Dead things– Atmosphere

Key Point #2: Carbon moves from source to source in five different processes (steps)

PhotosynthesisRespirationDecompositionCombustion (fossil fuel burning)

Gas exchange

Five steps of the carbon cycle

Carbon Cycle

A

AProcess: Cellular respirationIllustration Description: Arrow points from plants to atmosphere

Definition: plants and animals break down organic carbon to CO2

Money Analogy: returning money (CO2) to the bank

Respiration

CO2

CO2

CO2

CO2

Carbon Cycle

B

BProcess: PhotosynthesisIllustration Description: Arrow points from atmosphere to plants

Definition: plants convert CO2 into glucose (sugar)

Money Analogy: taking money out of the bank as dollars

Photosynthesis

+ CO2

Carbon Cycle

C

CProcess: CombustionIllustration Description: from factory to atmosphere

Definition: burning fossil fuels releases CO2

Money Analogy: returning money (CO2) to the bank

Combustion

CO2!!!!

Carbon Cycle

D D

DProcess: Gas exchangeIllustration Description: arrows between water and atmosphere

Definition: CO2 dissolves in and out of water

Money Analogy: money in and out of bank

Gas exchange

Water

CO2

Carbon Cycle

E

EProcess: DecompositionIllustration Description: dead animals to underground

Definition: carbon stored as fossil fuels after things die

Money Analogy: money hidden under the bed

Decomposition

CC

C

C

CC

C

What step of the carbon cycle???

Involves plants removing CO2 from the atmosphere?

Involves plants and animals releasing CO2 into the atmosphere?

Involves a human activity releasing CO2 into the atmosphere?

Adds and releases CO2 into the atmosphere at the same time?

Musical Chairs

Take the carbon cycle a step farther…

Answer questions 16 - 20 on your classwork Work together Think hard Answer thoughtfully

Independent Practice Individual work. Work hard. Think critically.

Exit QuestionsWrite in complete sentences!

Don’t talk during the Exit Question!

DESCRIBE what occurs in THREE of the following steps of the carbon cycle: photosynthesis, cellular respiration, decomposition, gas exchange, combustion

HOMEWORK: Worksheet # 1 – 8Back is Extra Credit