Science Matter and Energy

Front

What is the primary source of energy for almost all processes on Earth?

Back

The sun.

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NGSS.MS-LS1-6

Front

Which microorganisms are responsible for recycling nutrients by breaking down dead organisms?

Back

Bacteria.

Front

What do we call the layers of gases that surround the Earth?

Back

The atmosphere.

Front

What is the most abundant substance that most organisms are primarily composed of?

Back

Water.

Front

What are the two main components of Earth's atmosphere?

Back

Nitrogen and oxygen.

Front

What is the process by which plants convert sunlight into chemical energy?

Back

Photosynthesis.

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NGSS.MS-LS1-6

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What is the term for the natural cycle of matter in which nutrients are reused in different forms?

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Nutrient cycling.

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Front

What is the significance of water in biological systems?

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Water is essential for life, serving as a solvent, a medium for chemical reactions, and a means of temperature regulation.

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NGSS.MS-LS2-1

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Front

What is the role of the atmosphere in supporting life on Earth?

Back

The atmosphere provides oxygen for respiration, carbon dioxide for photosynthesis, and protects living organisms from harmful solar radiation.

Front

What is the difference between biotic and abiotic factors in an ecosystem?

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Biotic factors are living components (like plants and animals), while abiotic factors are non-living components (like water, air, and minerals).