Study words 5

Scientific subjects and investigation

12 entries. Read the meaning, try to make your own sentence, then reveal the example. These are topic collections, not a CEFR assessment.

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biology

noun

the scientific study of living things

Reveal an example

The biology course includes the study of plants.

chemistry

noun

the scientific study of substances and how they react

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The chemistry lesson examined a simple reaction.

ecosystem

noun

living things and their physical surroundings interacting as a system

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The pond forms a small ecosystem.

evolution

noun

the change in inherited features of living populations over generations

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The course explains how evolution changes populations over time.

hypothesis

noun

an idea proposed for testing or investigation

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The team collected evidence to test its hypothesis.

molecule

noun

a group of atoms joined by chemical bonds

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A water molecule contains hydrogen and oxygen atoms.

organism

noun

an individual living thing

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Each organism needs suitable conditions to survive.

photosynthesis

noun

the process by which plants and some other organisms use light to make food

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Plants use light during photosynthesis.

research

noun

careful study to discover information

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The research examined how people use the station.

experiment

noun

a planned test used to investigate an idea

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The experiment compared two ways of growing plants.

theory

noun

an organised explanation supported by reasoning or evidence

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The observations support the scientific theory.

analysis

noun

careful examination of something and its parts

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The analysis identified the main cause of the delay.

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