Section 1
Producers Capture Solar Energy for Ecosystems
Plants and algae transform sunlight into food energy through photosynthesis, forming the base of all food chains and creating the original energy source for consumers in ecosystems.
Grade 5 students learn how energy flows through ecosystems by exploring food chains, food webs, and energy pyramids in Chapter 2 of Science: A Closer Look. The lesson covers key concepts including producers, herbivores, carnivores, predator-prey relationships, and how energy is transferred from sunlight through living organisms. Students also distinguish between biotic and abiotic factors and examine how populations and communities interact within an ecosystem.
Section 1
Producers Capture Solar Energy for Ecosystems
Plants and algae transform sunlight into food energy through photosynthesis, forming the base of all food chains and creating the original energy source for consumers in ecosystems.
Section 2
Food Chains Connect Organisms Through Energy Transfer
Energy flows in one direction through food chains, starting with producers, moving to herbivores, then to carnivores. Each organism uses about 90% of energy for life processes.
Section 3
Food Webs Link Multiple Feeding Relationships
Multiple overlapping food chains create food webs, showing complex connections between organisms. Arrows represent energy flow, with predators controlling prey populations to maintain ecosystem balance.
Section 4
Energy Pyramids Show Decreasing Available Energy
Each level of the energy pyramid contains only 10% of the energy from the level below, explaining why there are more producers than herbivores and more herbivores than carnivores.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter
Expand to review the lesson summary and core properties.
Section 1
Producers Capture Solar Energy for Ecosystems
Plants and algae transform sunlight into food energy through photosynthesis, forming the base of all food chains and creating the original energy source for consumers in ecosystems.
Section 2
Food Chains Connect Organisms Through Energy Transfer
Energy flows in one direction through food chains, starting with producers, moving to herbivores, then to carnivores. Each organism uses about 90% of energy for life processes.
Section 3
Food Webs Link Multiple Feeding Relationships
Multiple overlapping food chains create food webs, showing complex connections between organisms. Arrows represent energy flow, with predators controlling prey populations to maintain ecosystem balance.
Section 4
Energy Pyramids Show Decreasing Available Energy
Each level of the energy pyramid contains only 10% of the energy from the level below, explaining why there are more producers than herbivores and more herbivores than carnivores.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter