Question 1

How does energy move in an ecosystem?

Accepted Answer

It begins as solar energy and is transformed into chemical energy as it moves upwards through trophic levels

Question 2

What is the First Law of Thermodynamics?

Accepted Answer

In a closed system, energy can be neither created nor destroyed

(it can be transferred)

Question 3

What is the Second Law of Thermodynamics?

Accepted Answer

Every time energy changes form, entropy increases

(entropy = disorder)

Question 4

What is biomass?

Accepted Answer

The total mass of all living matter in a specific area

Question 5

What is the 10% Rule?

Accepted Answer

Only 10% of energy in one trophic level is passed to the next

(if producers have 1,000 J of energy from photosynthesis, primary consumers will only get 100 J)

1.10 Energy Flow and the 10% Rule, AP Environmental Science Flashcards