The video tutorial explains the concept of an energy pyramid, a tool used to trace the flow of energy through an ecosystem. It covers how energy moves through food chains and food webs, and how these can be represented in an energy pyramid. The tutorial details the different trophic levels, starting with producers that make their own food through photosynthesis, and moving up to primary, secondary, and tertiary consumers, including apex predators. It also discusses energy transfer and loss at each level, and the role of decomposers in recycling energy back into the ecosystem.

What does an energy pyramid illustrate?

• The flow of water through an ecosystem

• The flow of energy through an ecosystem

• The flow of nutrients through an ecosystem

• The flow of air through an ecosystem

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary source of energy for the first trophic level?

• Soil

• Water

• Sun

• Wind

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What process do producers use to make their own food?

• Fermentation

• Digestion

• Photosynthesis

• Respiration

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NGSS.MS-LS1-6

What percentage of energy is typically transferred to the next trophic level?

• 90%

• 50%

• 25%

• 10%

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NGSS.MS-LS2-3

If a tree has 1000 kilojoules of energy, how much energy does a primary consumer get?

• 10 kilojoules

• 100 kilojoules

• 900 kilojoules

• 1000 kilojoules

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NGSS.MS-LS2-3

What type of consumers are herbivores?

• Secondary consumers

• Tertiary consumers

• Decomposers

• Primary consumers

Which of the following can be both omnivores and carnivores?

• Secondary consumers

• Primary consumers

• Decomposers

• Producers

Tags

NGSS.MS-LS2-3

What is the term for the top-level consumers in an energy pyramid?

• Secondary consumers

• Apex predators

• Primary consumers

• Tertiary consumers

What role do decomposers play in the energy pyramid?

• They produce energy

• They consume primary consumers

• They break down dead organisms

• They are at the top of the pyramid

Tags

NGSS.MS-LS2-3

Which level of the energy pyramid contains the most energy?

• Tertiary consumers

• Secondary consumers

• Primary consumers

• Producers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3