Vocabulary Review Make sure you review the following terms from Middle School: – Gas – Liquid – Solid – Photosynthesis – Cellular Respiration
Vocabulary Use the reading from last night to define the following terms: – Biogeochemical cycle – Fossil fuel
Notes Unlike energy, matter is not lost as it passes through an ecosystem. Matter is recycled – Biogeochemical cycles Water cycle Carbon cycle Nitrogen cycle Oxygen cycle
Notes The Water Cycle Why is water important? – Write your answer in the top margin of page 52.
Notes “Food For Thought” at the bottom of page 52 – Where does the water come from that is needed by your cells?
Notes The Carbon Cycle How do organisms obtain carbon? – Photosynthesis Know the equation! The cycling of carbon dioxide in photosynthesis and cellular respiration are main components of the carbon cycle.
Notes How is carbon released to the atmosphere? – Cellular respiration – Transpiration – Burning of fossil fuels – Decomposition of organic matter
Notes Global Warming – Earth’s average temperature is slowing rising from year to year. – Some scientists attribute this rise to increased levels of CO 2 in the atmosphere.
Activity On page 52, color the: – Gases – gray – Liquids – blue – Solids – white On page 56, use a colored pencil to trace Carbon’s path in the cycle.
Extension Complete the “Extension Activity” at the bottom of page 53 and top of page 54.
Monday Objective I will explain relationships between matter cycles and organisms.
Homework Draw the water and carbon cycles on separate papers. Read pages 59-65. Come to class prepared to share a question from your reading.
Tuesday Objective I will explain relationships between matter cycles and organisms.
Tuesday Bell work Complete questions 1 & 2 on page 62. Complete questions 1 & 2 on page 65.
Vocabulary Use the reading from last night to define the following terms: – Nitrogen fixation – Denitrification
Notes The Nitrogen Cycle – Important for proteins and DNA. In order for plants to make use of nitrogen, it must be transformed into molecules they can use. – Lightning – Nitrogen fixation – Released by decaying organisms
Notes Nitrogen fixation – On land: Special nitrogen fixing bacteria transform the nitrogen gas in the atmosphere into useful forms (ammonium). These bacteria live in the roots of plants in the pea family (legumes). – In Water: Special bacteria in water also “fix” nitrogen gas into ammonium to be used by aquatic plants.
Notes Denitrification – Turning nitrate back into nitrogen gas. – Special “denitrifying bacteria” in the soil, swamps and lakes – Take in ammonium and release nitrogen gas