cycling big ideas. 7.5b demonstrate and explain the cycling of matter within living systems such as...
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7.5B Demonstrate and explain the cycling of matter within living systems such as in the
decay of biomass in a compost bin
• I can draw a diagram that shows the flow of matter.• I can explain in complete sentences, the
flow of matter• I can describe what takes place in a
compost bin• I can interpret/analyze diagrams of cycles
Matter• Anything that has mass & volume
(takes up space)• Examples:–Plants & Animals–Water–Air
Law of Conservationof Matter
•Matter cannot be created•Or destroyed•Only can be rearranged• Beginning Matter = End Matter
• How could you have part of a dinosaur inside you?
Dinosaur(Carnivore)
Dead dinosaurOr Feces
Decomposers
Plants
Decomposer• Organisms that chemically break down dead
organisms & feces, and returns nutrients to the soil• Examples: mushrooms, worms, bacteria,
microorganisms, dung beetles, mold, insects, maggots
Biomass• Dead plants & animals, feces/manure• Renewable energy source from biotic factors• A tropical rainforest has more biomass than a
desert
Compost Bin• Container filled with leaves, grass, fruit, etc.• Decomposers break it down chemically into
humus (natural fertilizer) • Needs: moisture, air, rotated, nitrogen,
carbon • Temperature increases• Amount of biomass reduces
Process of Decaying• Reduces Biomass• Increases temperature• Click below for Video Clips–Fruit & Vegetables–Rabbit
Need to know aboutDECOMPOSITION
• Organic matter is broken down chemically by decomposers, returned to the soil
• Temperature increases because heat energy is released by decomposers.
• Biomass is reduced during decomposition.• New plants use the nutrients from the soil to grow.• Animals get nutrients they need from plants and
other animals.• Nutrients needed: energy, nitrogen, carbon
Carbon CyclePlants take in more carbon dioxide than they give off!What would happen if deforestation took place? More cars?
Nitrogen CycleWhere do animals get NITROGEN?
Water (Hydrologic) CycleWhat would happen to the water cycle without the Sun?
Cycles Reflection• Diagram the flow of
nutrients/biomass.• Explain in complete sentences the
cycling of nutrients/biomass.–Use vocabulary words such as:
decay, biomass, compost bin, decomposer, Law of Conservation.