Science Concepts for Grade 7

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Animal Cell

Back

unit of life in animals; contains nucleus, cytoplasm, cell membrane.

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Plant Cell

Back

cell wall, chloroplasts, and large central vacuole.

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Human Body Systems

Back

circulatory, respiratory, digestive, nervous, and more.

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Genetics

Back

of heredity and variation in organisms.

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Heredity

Back

of traits from parents to offspring.

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Earth's Atmosphere

Back

of gases surrounding Earth; includes troposphere, stratosphere.

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High Pressure System

Back

with clear skies and calm weather.

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Low Pressure System

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leads to cloudy, stormy weather.

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Tornado

Back

rotating column of air in contact with the ground.

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Hurricane

Back

powerful storm system with strong winds and heavy rain.