lesson 4.1 Energy Flashcards
Define ecosystem
all the organisms in a community including the abiotic factors
Biomass
the amount of matter in a living thing
What can biomass used for?
Biomass can be used to measure energy transfer.
What is energy transfer?
the way energy is transferred through the trophic levels of an ecosystem
How is energy lost?
Energy is lost through heat which is the cost of living.
What does the pyramid of biomass display?
It shows us the comparison of the mass of biological material at each trophic level.
What is the average amount of energy lost between each trophic level?
On average only 10% of the energy in the previous trophic level is transferred to the next level
What does the pyramid of energy show?
It compares the amount of energy passing through each trophic level over a period of time
What is the relationship between biomass and energy?
The amount of energy affects the amount of biomass. If there is less energy it will result in less biomass.
What energy conversion occurs during photosynthesis?
During photosynthesis light energy from the sun is converted to chemical energy.
What is the pyramid of numbers?
It shows the total number of individual organisms at each level in the food chain of an ecosystem. ( population size)
How does the pyramid of numbers differ from the pyramids of biomass and energy?
The pyramid of numbers differ because it doesn’t flow in an organized manner like that of the other two pyramids. This is because it doesn’t take into account the biomass of the organisms.
