2024 Final Science Exam

Front

What is a food chain?

Back

A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

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What are producers in a food chain?

Back

Producers are organisms, like plants, that create their own food through photosynthesis and form the base of the food chain.

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What are consumers in a food chain?

Back

Consumers are organisms that eat other organisms for energy. They can be herbivores (plant-eaters), carnivores (meat-eaters), or omnivores (both).

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What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and completing the nutrient cycle.

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What is the difference between a food chain and a food web?

Back

A food chain is a simple linear pathway of energy flow, while a food web is a complex network of interconnected food chains.

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What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table that indicate the number of electron shells in the elements.

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What are groups in the periodic table?

Back

Groups are the vertical columns in the periodic table that contain elements with similar chemical properties.

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What are metalloids?

Back

Metalloids are elements that have properties of both metals and non-metals, found along the zig-zag line in the periodic table.

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What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together, such as carbon dioxide (CO2).

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, such as oxygen or iron.