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Science Terms

QuestionAnswer
Hypothesis A guess or prediction you can test.
Variable Something that can change in an experiment.
Experimental Group The group in an experiment that you test or change.
Data Information you collect during an experiment.
Conclusion A decision based on what you find out.
Theory A good guess that's been tested and proven many times.
Cell The smallest part of a living thing.
DNA A special code that tells your body how to grow and work.
Ecosystem All the living and non-living things in an area.
Photosynthesis How plants make food using sunlight.
Respiration How your body gets energy from food.
Mutation A change in your body's instructions.
Enzyme A tiny part in your body that helps it work better.
Atom The smallest piece of an element.
Molecule A small group of atoms stuck together.
Compound When two or more kinds of atoms stick together.
Reaction What happens when things change in chemistry.
Acid Something that tastes sour and can be dangerous.
Base Something that feels slippery and can help clean things.
Force A push or pull on something.
Velocity How fast something is moving.
Acceleration How fast something's speed is changing.
Energy The power to make things move or change.
Kinetic Energy Energy of things that are moving.
Potential Energy Energy that's stored and can be used later.
Observation Noticing things using your senses or tools.
Experiment A test to find out what happens.
Analysis Looking closely at something to learn more.
Replication Doing an experiment again to see if you get the same results.
Independent Variable What you change in an experiment.
Dependent Variable What you measure in an experiment.
Control Something that stays the same in an experiment.
Constants Things in an experiment that don't change.
Inference A guess based on what you know.
Direct Relationship When one thing increases, the other also increases.
Indirect Relationship When one thing increases, the other decreases.
Density How tightly packed matter is within a substance. Example: Gold has a higher density than water, so it sinks in water.
Units of Measurement Standard quantities used to express measurements, such as meters (length), grams (mass), or seconds (time). Example: Length is measured in meters.
Gravity The force that attracts objects toward each other, like how the Earth pulls objects downward. Example: Gravity keeps the Moon orbiting around the Earth.
Photosynthesis The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Example: Plants produce glucose and oxygen through photosynthesis.
DNA A molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms. Example: DNA determines inherited traits like eye color.
Scientific Methods The systematic way scientists conduct experiments and studies to learn about the world. Example: Following the scientific method involves making observations and forming hypotheses.
Concept of Depth (Fossils/Glacial Deposits) Understanding how fossils and glacial deposits are used to determine the age and history of Earth's geological layers. Example: Deeper fossils are usually older than those near the surface.
Insulators Materials that do not allow heat or electricity to pass through easily. Example: Rubber and wood are good insulators.
Cell Structure The different parts of a cell and their functions. Example: The nucleus contains genetic material and controls cell activities.
Created by: user-1842389
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