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Food For Thought – Energy

Food For Thought – Energy. Ecology. the study of the RELATIONSHIPS of living things to EACH OTHER and their ENVIRONMENT (surroundings). Ecosystems. ALL of the LIVING communities of an area together with the NON-LIVING parts of their ENVIRONMENT. Parts of an Ecosystem.

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Food For Thought – Energy

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  1. Food For Thought – Energy

  2. Ecology • the study of the RELATIONSHIPS of living things to EACH OTHER and their ENVIRONMENT(surroundings)

  3. Ecosystems • ALL of the LIVING communities of an area together withthe NON-LIVING parts of their ENVIRONMENT

  4. Parts of an Ecosystem • LIVING community (BIOTICfactors) • ENERGY input and use • NUTRIENT cycling • NON-LIVING environment (ABIOTICfactors)

  5. Ecology involves the study of the following things: • The interactions between members of the BIOTIC community (the living plants, animals and microbes) • The interactions between members of the BIOTIC community and the NON-LIVING environment • The interactions between the ABIOTIC environmental factors (such as light-temperature-moisture)

  6. The Environment and Energy • Energy – the ABILITY to do WORK • All LVING ORGANISMS use energy for life processes.

  7. Forms of Energy: • 1. Light • 2. Heat • 3. Chemical • 4. Mechanical • 5. Electrical

  8. First Law of Thermodynamics • Energy is never CREATED nor DESTROYED but is only CHANGED from one form to another, or TRANSFERRED from one place to another.

  9. Second Law of Thermodynamics • When ENERGY is transformed or transferred, a part of the energy is LOST in the form of HEAT.

  10. How organisms obtain energy • ECOSYSTEMS are powered by energy from the SUN • Energy only enters living things at the PRODUCER level. • As energy is passed along the FOODchain, much of it is lost as HEAT.

  11. How organisms obtain energy • Energy flows ONE way through the food chain, from PRODUCERS through CONSUMERS. • Each level of the food chain has LESS available energy in it.

  12. Different organisms get energy in different ways • Autotroph • Organisms that can make their own food (green plants) • Heterotrophs • Organisms that cannot make their own food and have to feed on autotrophs or other heterotrophs (bear)

  13. Producers • Green Plants • They capture light energy from the sun and convert it into food energy.

  14. Consumers • are Animals that depend upon greenplants and other animals for food.

  15. Types of Consumers • Primary Consumer • (Herbivores) – eat PLANTS to get energy • Secondary Consumers • (Carnivores, omnivores) – eat ANIMALS to get energy • Tertiary Consumers • (Scavengers, Humans) – eat ANIMALS to get energy

  16. Decomposers • Break down and DECOMPOSE DEAD ORGANISMS getting energy and releasing nutrients back into the environment.

  17. You Are What You Eat • Food Chains • A simple LINEAR drawing showing which organisms feed upon which others

  18. You Are What You Eat • Food Web • A NUMBER OF INTER-CONNECTING FOOD CHAINS

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