Presentation on theme: "Matter and Energy In Ecosystems. 3 Ecosystem Necessities Recycling of Matter (nutrient cycles). Flow of Energy (food chain). Gravity (keeps everything."— Presentation transcript:
Matter and Energy In Ecosystems
3 Ecosystem Necessities Recycling of Matter (nutrient cycles). Flow of Energy (food chain). Gravity (keeps everything here).
Matter Anything that has mass and takes up space. Examples: solids (nutrients), liquids, gases.
Energy The ability to do work. Potential energy- stored energy. Ex. food, gasoline.
Kinetic energy- movement. Ex. exercise, a car rolling.
High quality energy Organized, concentrated. Ex. Petroleum, electricity, nuclear fission, food.
Low quality energy Disorganized, not concentrated. Ex. Low temperature heat, dispersed geothermal energy.
Laws of Thermodynamics 1 st law- conservation of energy. Energy input always equals energy output.
2 nd law- energy degrades as it is changed from one form to another.
Energy Chain fuel heat steam kinetic energy electricity falling water kinetic energy electricity light heat wind kinetic energy electricity light heat sunlight plant tissue kinetic energy heat
Energy In Ecosystems
Energy in Ecosystems Food Chains- show the movement of energy from one feeding level (trophic level) to the next.
Food Web- interlocked food chains.
Trophic levels Producers- harness energy from the sun to produce their own food. Ex. plants, phytoplankton.
Primary consumers- eat producers harnessing their energy (biomass). Herbivores.