The Metric System

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The Metric System
The Scientific Method
The Microscope
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What number is the metric system based on?
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Ten.
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What is the basic unit of length?
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Meter.
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What unit is used to measure the mass of a baby
gorilla?
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Kilogram.
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What unit is used to measure a sip of soda?
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Milliliter.
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Compare mass and weight.
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Mass is constant, weight changes because
gravitational force can change.
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What is the goal of science?
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To find out about the world around us.
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What two things must you do before forming a
hypothesis. Why?
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State the problem accurately and gather all
important information. You cant form a
hypothesis if you dont know what youre talking
about.
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Compare an experiment and a control experiment.
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The control experiment is done the same way, just
without the variable (factor being tested).
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What is the difference between a law and a theory?
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A law summarizes experimental facts, a theory is
the most logical explanation for events that
occur in nature.
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Explain why there can only be one variable in an
experiment.
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If more than one variable were tested, it would
not be clear which variable caused the results.
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Eyepiece.
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You look through it sometimes has an arrow.
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Fine adjustment knob.
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Moves nosepiece slightly to sharpen image.
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Coarse adjustment knob.
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Moves nosepiece up and down for focusing.
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Aperture.
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Allows light through the stage to go through
slide.
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Diaphragm.
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Regulates the amount of light that passes through
slide.