Ingredients for a Good Experiment Experiment Sketch Independent

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Ingredients for a Good Experiment

Ingredients for a Good Experiment

Experiment Sketch

Experiment Sketch

Independent Variable • The variable that is purposely changed to test a hypothesis.

Independent Variable • The variable that is purposely changed to test a hypothesis.

Memory Tool How does ______ affect _____? Blank #1 = independent variable Blank #2

Memory Tool How does ______ affect _____? Blank #1 = independent variable Blank #2 = dependent variable

Dependent Variable • The variable that might change in response to the independent variable.

Dependent Variable • The variable that might change in response to the independent variable.

Control • The part of the experiment that is kept under “normal” conditions. •

Control • The part of the experiment that is kept under “normal” conditions. • Not always necessary

Constants • Those parts of the experiment that need to be kept the same

Constants • Those parts of the experiment that need to be kept the same throughout the experiment.

Bias (is bad) • When what a scientist expects to happen changes the end

Bias (is bad) • When what a scientist expects to happen changes the end results.

Scientific Theory • A well-tested explanation for a wide range of observations or experimental

Scientific Theory • A well-tested explanation for a wide range of observations or experimental results. • Future testing can still prove an accepted theory to be incorrect. • Based on laws

Examples of Theories • Cell Theory • Kinetic Theory of Matter

Examples of Theories • Cell Theory • Kinetic Theory of Matter

Scientific Law • Is a rule of nature. • A statement that describes what

Scientific Law • Is a rule of nature. • A statement that describes what scientists expect to happen every time under a particular set of conditions.

Examples of Laws • Newton’s 3 laws of motion • Universal law of Gravitation

Examples of Laws • Newton’s 3 laws of motion • Universal law of Gravitation

To sum it up… • Houses can be changed (like a theory), but bricks

To sum it up… • Houses can be changed (like a theory), but bricks cannot (like a law) OR • Songs can be changed (like a theory), but the notes cannot (like a law)