Flow of Energy

Flow of Energy and Matter

Warm Up: using the power point from yesterday, specifically slides 5 & 6

Open Ended

Explain the differences in how freshwater fish and saltwater fish are able to maintain regulate the amount of salt in their bodies.

Checking for understanding.

• Where does all of the energy in an ecosystem originate?

• Which of these choices is the original source of energy that humans receive from consuming an herbivore such as a cow?

Multiple Choice

Where does all of the energy in an ecosystem originate?

• The plants

• The water

• The animals

• The sun

Multiple Choice

Which of these choices is the original source of energy that humans receive from consuming an herbivore such as a cow?

• The glucose we make from eating the cow

• The sun

• The nutrients the grass absorbs and makes itself

• The proteins and fatty acids in the cow

Checking for understanding

• What happens to energy as it moves up the food pyramid, from producers up to tertiary consumers?

• All of the given answer options represent organisms that could coexist in an ocean ecosystem. In this hypothetical ecosystem, which organism will receive the least amount of energy in the food web?

Multiple Choice

What happens to energy as it moves up the food pyramid, from producers up to tertiary consumers?

• It varies depending on the food pyramid

• Energy is lost as heat

• Food pyramids do not involve energy

• It increases

Multiple Choice

All of the given answer options represent organisms that could coexist in an ocean ecosystem. In this hypothetical ecosystem, which organism will receive the least amount of energy in the food web?

• Great white shark

• Marlin

• Green algae

• Tuna

Almost Done!

• From where do autotrophs obtain their carbon, nutrients, and minerals?

Multiple Choice

From where do autotrophs obtain their carbon, nutrients, and minerals?

• From the inorganic environment

• From human activity and byproducts

• From the sun

• From heterotrophs

Open Ended

Exit ticket: Explain WHY the top predators in a food web receive the least amount of energy from the animals they eat.