Scientific Method Vocabulary & Lab Safety

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created 6 years ago by staceysavage
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introduction to the scientific method
updated 9 months ago by staceysavage
Grade levels:
5th grade
Subjects:
science
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problem

the question to be solved in an experiment

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Hypothesis

a prediction or educated guess about how a scientific experiment will turn out

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data

the facts or figures collected in an experiment from which a conclusion can be drawn

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procedure

the step by step account of directions used in completing an experiment. (like a recipe)

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observation

anything that is noticed in an experiment (sight, sound, smell, etc)

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prediction

statements about what is expected to happen in the future based on past experiments

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conclusion

the act of drawing a solution from the information found in an experiment (used as a comparison)

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control

the part of the experiment that does not receive the variable you are testing

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independent variable

the only thing that is different between your control and your experiment. A well designed experiment only has one of these

(The "IF" in your hypothesis statement.)

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goggles

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used to protect eyes while doing a science experiment

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Mortar & Pestle

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a tool that is used to crush or grind a substance

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test tube

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slender container that can be used to hold small amounts of liquid

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Beaker

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a simple container for stirring, mixing and heating materials

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test tube tongs

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a tool used to pick up a hot test tube and to move it to a new location

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forceps

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used to grasp small objects

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petri dish

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used to grow bacteria or to hold tiny living organisms

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pipet pump

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aids in drawing liquids up into a graduated pipet

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Glass stirring rod (w/ rubber policeman)

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used for mixing chemical solutions

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transfer pipet

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used to transfer small amounts of liquid from one container to another

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dependent variable

the change you measure at the end of the experiment

(The "then" in your hypothesis statement)

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Quantitative data

numerical data, such as the plant grew 8 cm.

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Qualitative data

descriptive data (Example: The class was tired today., The flowers were red.)

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Meniscus

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the concave curve that you used to read the volume in mL

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thermometer

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the tool that is used to measure temperature

Usually in degrees Celsius

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triple beam balance

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the tool that is used to determine the mass of an object

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1st step in the scientific method

observe and state the problem

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2nd step in the scientific method

form a hypothesis

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3rd step in the scientific method

test the hypothesis using a controlled experiment

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4th step of the scientific method

collect and organized data

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5th step of the scientific method

form a conclusion (where you accept or reject your hypothesis)

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6th step of the scientific method

Replication (make sure the results are reliable and reproducible)

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7th step of the scientific method

Theory (when a hypothesis can be proven over and over again and has lots of data and evidence to support it)