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Chapter 1.1 Review
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1. What are the seven basic areas of physics study?
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mechanicsthermodynamicswavesopticselectricity and magnetismrelativitynuclear physics
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2. What area of physics is involved in each of these situations?
A) You flip a switch and the lights come on.B) A car wreck.C) An ambulance siren.D) Cooking dinner.E) Polarized sunglasses
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A) You flip a switch and the lights come on. electrostaticsB) A car wreck. mechanicsC) An ambulance siren. wavesD) Cooking dinner. thermodynamicsE) Polarized sunglasses waves, optics
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3. List the steps in the scientific method.
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ProblemResearchHypothesisExperimentConclusions
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4. Use an example to show how the steps in the scientific method could be used to solve a hypothetical problem.
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Problem – The light sin the room don’t work.Research – Talk to the maintenance person to see what could be.Hypothesis – I think the circuit breaker is open.Experiment – Reset the circuit breaker.Conclusions – The lights are on! My hypothesis is correct!
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5. How does the use of models help scientists understand the physical world?
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A model is a way of explaining something complicated in terms of something familiar.
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6. What are MIX and DRY?
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MIX and DRY refer to controlled experiments.
MIX – manipulated (independent) variable, plotted on the x-axis.
DRY – dependent (responding) variable, plotted on the y-axis.
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7. List some differences in laws and theories.
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A law only tells what happens, it doesn’t explain why.
A theory also explains why.
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