Energy Flow in Food Webs

Energy Flow in Food Webs

This is what your notes will look like when they are done!

Energy Flow

Left Side: Energy Flow

Right Side:

All energy starts from sun
Producers get energy from sun
Consumers get energy from eating living things
Only 10% energy passed each step

Food Chains

Left Side: Food Chains
Right Side: 


Show path of energy from organism to organism
Energy starts at sun!
Arrow points from thing with energy to thing getting energy

Poll

Can a food chain have an infinite number of links?

• Yes

• No

Food Webs

Left Side: Food Webs

Right Side:

Food chains overlap to make webs

More realistic

Different roles in different chains 

Open Ended

What would happen if all the grasshoppers died?

Energy Pyramids

Show amount of energy moving up levels

Producers = Bottom
Consumers = Top

Amount of energy decreases as you go up

Multiple Choice

If we turned this food chain into an energy pyramid, what would go in number 1?

• Grashopper

• Grass

• Snake

• Frog

Multiple Choice

If we turned this food chain into an energy pyramid, what would go in number 2?

• Grashopper

• Grass

• Snake

• Frog

Multiple Choice

If we turned this food chain into an energy pyramid, what would go in number 3?

• Grashopper

• Grass

• Snake

• Frog

Multiple Choice

If we turned this food chain into an energy pyramid, what would go in number 4?

• Grashopper

• Grass

• Snake

• Frog