Presentation on theme: "Energy Transfer All living things need energy to survive."— Presentation transcript:
Energy Transfer All living things need energy to survive
Where does energy come from Energy comes from food Plants Energy Comes from the sun through photosynthesis Animal Energy Comes from eating either plants, animals, or both plants and animals ***The source of most life giving energy comes from the Sun!
Capturing the Sun’s Energy Animals (most) cannot use the Sun’s energy to make food Only producers (plants) can change the Sun’s energy into good energy through photosynthesis
Food Chain Consumer eats a producer, some of the stored energy is passed on to the consumer If consumer is eaten by another consumer, energy is passed on to the second consumer If the second consumer is eaten by another consumer, energy is passed on to the third consumer Transfer of energy creates a food chain
Food Chain: is the path of energy transfer from one organism to another Grass Mouse Cat Hawk
Moving Up The Line Plants are often the first link in the food chain 1 st Order Consumers = organisms that eat producers Examples: mice, grasshoppers, rabbits 2 nd Order Consumers = eat 1 st Order Consumers Do 2 nd Order Consumers depend on 1 st Order Consumers?
Food Chains & Decomposers Where are decomposers in the food chain? Decomposers get energy from breaking down dead plants and animal matter. Can be found in soil Example: bacteria, fungi, worms
What is a food web? Consumers and decomposers get energy from more than one kind of food. Organism can be part of many food chains Food chains can overlap The overlapping of food chains form food webs