Energy Transfer

Question 1

What is the majority of energy lost as?

Answer 1

Heat, movement, undigested materials or chemical reactions.

Question 2

What is the source of energy?

Answer 2

The sun

Question 3

How much energy is passed on to the consumer?

Answer 3

Only 10% of energy is passed in to the consumer this means that at each stage of the food chain 90% of the energy is lost

Question 4

What is a pyramid of numbers? What are its advantages and disadvantages?

Answer 4

A pyramid of numbers gives information about the total number of organisms in each level of the food chain.
+ it’s relatively simple to measure
- it doesn’t give an accurate representation for some food chains

Question 5

What is a pyramid of energy? What are a pyramid of energy’s advantages and disadvantages?

Answer 5

A pyramid of energy fives information about the energy content of all the organisms in each level of a food chain.
+ It is a more accurate representation than either of the other pyramids
- It’s difficult to get a reliable measurement of the energy content of some organisms