7th Grade Ecosystem Energy and Matter Flow Review Game

The source of energy for most ecosystems is:

• Sunlight

• Wind

• Water

• Geothermal

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Producers in an ecosystem are defined as:

• organisms that consume other organisms for energy

• organisms that produce their own food through photosynthesis or chemosynthesis

• organisms that decompose organic material

• organisms that live in symbiotic relationships

What is the role of consumers?

• To produce goods and services

• To consume goods and services

• To regulate the market

• To provide labor

Energy flows through a food chain in a specific order. Which of the following represents the correct sequence?

• Producers -> Consumers -> Decomposers

• Consumers -> Producers -> Decomposers

• Decomposers -> Producers -> Consumers

• Consumers -> Decomposers -> Producers

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Describe the concept of trophic levels.

• Trophic levels refer to the steps in a food web, chain, or pyramid. Producers at the base and levels of consumers are above them.

• Trophic levels are the different layers of soil in a forest ecosystem.

• Trophic levels describe the various stages of plant growth in an ecosystem.

• Trophic levels are the levels of water in a marine ecosystem.

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Matter is:

• a solid substance

• anything that has mass and takes up space

• a type of energy

• a chemical reaction

A biogeochemical cycle is defined as:

• The movement of chemical elements between living organisms and the environment.

• The process of photosynthesis in plants.

• The water cycle in nature.

• The formation of rocks and minerals.

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The water cycle is a process that involves the continuous movement of water on, above, and below the surface of the Earth. What is this process called?

• Evaporation

• Condensation

• Precipitation

• Water Cycle

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How does carbon cycle through the environment?

• Through photosynthesis and respiration

• By dissolving in water bodies

• Through volcanic eruptions

• By being trapped in ice

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The nitrogen cycle is a crucial process in the ecosystem. Which of the following best describes the nitrogen cycle?

• The process by which nitrogen is converted into various chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems.

• The process of photosynthesis in plants.

• The cycle of water movement through the atmosphere, ground, and bodies of water.

• The process of carbon dioxide being converted into oxygen by plants.

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