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25 Cards in this Set
- Front
- Back
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physical science
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a study of matter and energy
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observation
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The statement
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hypothesis
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A possible answer to a question.
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variable
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is the factor that changes in an experiment
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analyzing data
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organizing data into a graph
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sience
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the knowledge obtained by observing natural events.
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scientific methods
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a series of steps followed to solve problems.
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observation
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a process of obtaining information by using sense.
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hypothothesis
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an explanation based on prior scientific research.
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theory
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an explanation that ties together many hypothesis and observations.
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law
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a summary of many experimental results and observations.
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modle
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a pattern plan representation or designed to show the structure of markings of an object
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theory
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theory is an explanation that ties together many hypothesis and observations.
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volume
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a measure of the size of an object or region in three dimensional space
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Mass
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a measure of the amount of matter in an object.
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Describe three kinds of models used in science. give an example and explain one limitation of each model?
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there are mathematical physical and conceptual models they all have to do with representing a model.
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What are the steps used in scientific methods?
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collecting data asking a question forming a hypothesis and analyzing data.
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If a hypothesis is not testable is the hypothesis wrong? Explain?
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I hypothesis cant be wrong because it is a scientific guess you cant bewrong on a guess because its not a statement.
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A tailer is someone who makes or alters items clothing. why might a standard system of measurement be helpful to a tailer?
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a stranded system of measurement allows a tailer to make clothing fit a customer exactly.
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You build a model boat that you predict will float. However, your tests show that the boat sinks. What conclusion would you draw? Suggest some logical next steps.
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I would conclude that the material I was using was too dense or that the shape that I was forming the boat in was not displacing enough water to allow the boat to float. Some logical next steps would be to find another material or to change the shape of the boat, and then perform the experiment again.
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Imagine that you are conducting an experiment. You are testing the effects of the height of a ramp on the speed at which a toy car goes down the ramp. What is the variable in this experiment? What factors must be controlled?
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The variable is the height of the ramp. Some of the factors that must be controlled are the equipment used, the way the toy car is released, the length of the track, and the time measured.
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Suppose a classmate says, “I don’t need to study science because I’m not going to be a scientist, and scientists are the only people who use science.” How would you respond? In your answer, give several examples of careers that use physical science.
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Scientists are not the only people who use physical science. For example, chefs have to understand how food ingredients will interact, and they have to measure quantities prop¬erly, and firefighters must be knowl¬edgeable about the properties of different materials that they might encounter in a fire.
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How similar is this model to a real object?
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The model is similar to the real object in terms of structure and the relative sizes of different parts of the building. It also shows the location of the windows and doors that will be built.
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What are some of the limitations of this model?
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The model does not show the interior features, such as plumbing, furniture or carpeting. It also has no electrical capabilities.
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How might this model be useful?
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The model does not show the interior features, such as plumbing, furniture or carpeting. It also has no electrical capabilities.
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