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| 1.what is a independent variable? |
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Definition
| The one factor that is purposefully changed to test the hypothesis. |
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| 2.what is a dependent variable? |
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Definition
| The factor that must change in response to the independent variable. |
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Term
| 3.what is a control group? |
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Definition
| The group in which everything is the same as the test group except the independent variable stays the same. |
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Term
| 4.What are constants of an experiment? |
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Definition
| The factors that are kept the same throughout the experiment |
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Term
| 5.What is a conclusion of an experiment? |
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Definition
| A summary of what you learned from the experiment. |
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Term
| 6.What is a quantitative observation? What is a qualitative observation? |
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Definition
| Quantitative observation deals with numbers. Qualitative observation deals with descriptions that cannot be expressed in numbers. |
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Term
| 7.When a different scientist does the same experiment that you did, it is called ________________. |
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Definition
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Term
| 8.What is the term that describes the information used for calculating and reasoning that a scientist gathers during an investigation? |
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Definition
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Term
| 9.Visual or mathematical representations that are used to study objects that are too small or too big to study directly are called___________. |
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Definition
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Term
| 10.Make observations of your living room and record them. |
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Definition
| couch , tv, dog, table, rug, etc. |
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Term
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Definition
| An inference is an explanation based on reasoning and prior knowledge from what you observe. |
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Term
| 12.What factors make an experiment valid when tested by many different scientists? |
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Definition
| When the scientists obtain similar results than other scientists that performed the same experiment. |
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Term
| 13.Using one or more of your senses is called ___________. |
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Definition
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Term
| 14.When the same scientist does the same experiment over and over again, this is called ___________. |
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Definition
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Term
| 15.The metric system of measurement is based on the number ____________. |
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Definition
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Term
| 16.What does a scientist measure when using graduated cylinder? |
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Definition
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Term
| 17.What does a scientist measure using a balance? |
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Definition
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Term
| 18.List some items that would be measured in kilometers. |
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Definition
| Long distances. For example: The distance from Merritt Island to Cocoa Beach |
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Term
| 19.What is the basic SI unit for mass? |
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Definition
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Term
| 20.Define mass. Define weight. Compare them. |
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Definition
Mass is the measure of the amount of matter in an object. Weight is the measure of the force of gravity on an object.
When a person travels to the moon, their mass stays the same but their weight changes because the force of gravity is less on the moon than on Earth. |
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Term
| 21.The amount of space an object takes up is called ___________. |
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Definition
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Term
| 22.What does density measure? |
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Definition
| How much mass is contained in a given volume. |
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Term
| 23.Describe the relationship that is shown between the independent and dependent variable in a line graph. |
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Definition
| The line graph shows how the dependent variable changes in response to the independent variable. |
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Term
| 24.What is the official SI unit of temperature? |
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Definition
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Term
| 25.Measure the volume of a regular solid using these dimensions: 20 cm high, 8 cm wide and 15 cm long. |
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Definition
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Term
| 26.The formula for finding density is Density = Mass ÷ Volume. What is the density of an object that has a mass of 0.54 g and a volume of 0.3 cm3? |
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Definition
D = m÷V D = 0.54 g ÷ 0.3 cm3 =1.8 g/ cm3
Put 0.54 in the calculator first, then press ÷ sign, then 0.3 and the = sign. |
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Term
| 27.A hypothesis must be ______________ to be considered a good hypothesis. |
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Definition
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Term
| 28.In an experiment, students took their pulse before, during and after exercise at each 2 minute interval. What is the dependent variable of the experiment? |
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Definition
| The pulse rate of the students |
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Term
| 29.What characteristics (steps) define a laboratory experiment? |
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Definition
| Independent and dependent variables, data and controlled condition |
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Term
| 30.Grouping items or information into categories is called ________________. |
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Definition
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