1. ENERGY Flow

2. What is Energy? Something that gives usable power Capacity to do work
Energy can take different forms
Kinetic, Potential,
Mechanical, Chemical, Radiant, Thermal, etal.

3. Law of Conservation of Energy
total energy of an isolated system cannot change—it is said to be conserved over time. Energy can be neither created nor destroyed, but can change form; for instance, chemical energy can be converted to kinetic energy.

4. Primary energy source on Earth is:
The Sun

5. The Sun
Sunlight is the main, or primary energy source for life on Earth
Less that 1% of the total solar energy reaching the Earth’s surface is used by living things
Photosynthesis

6. Chemical
Some organisms can get and use energy from inorganic compounds
Inorganic – means not
containing carbon/
hydrocarbon chemical
compounds of life
Chemosynthesis

7. Autotrophs
Producers
Get energy from the Sun or inorganic chemicals, and convert this to usable energy for their life

8. Heterotrophs
Consumers
Get energy from other living organisms

9. Food Chain
Series of steps of energy transfer as one organism eats another.

10. Food Web More complex than a food chain.
Multiple feeding relationships and interactions

12. Trophic Levels Each step of a food chain or web.
Producers are the first step
Consumers are the etc levels, depending on what they eat
Herbivore would be a 2nd level
Something eating only a herbivore would be 3rd, and so on

14. Ecological Pyramids
Only 10% of the energy from a lower trophic level is available, or transferred to the next higher level
The number 1 loss to the pyramid is due to heat