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01 Introduction PS
Prentice Hall Explorer - Chapter 1
| Question | Answer |
|---|---|
| Science | This is a way of learning about the natural world by gathering information. |
| Observing | This means using one or more senses to gather information. |
| Qualitative Descriptions | These descriptions are descriptions that dont involve numbers or measurements. |
| Quantitative Observation. | This observation is an observation made with numbers or measurements. |
| Inferring | This is explaining an observation based on reasoning from what you already know. EX: ( six people see a fight and they all report a slightly different viewpoint). |
| Predicting | This means making a forecast of what will happen in the future based on past experience or evidence. |
| Chemistry | This is the study of the properties of matter and how matter changes. |
| Physics | This is the study of matter and energy and how they interact. |
| Scientific Inquiry | This refers to the different ways scientists study the natural world. |
| Hypothesis | This is a possible answer to a scientific question or explanation. |
| Manipulated Variable | This variable is the variable that is changed on purpose during an experiment.( It's what you are testing.) |
| Responding Variable | This variable is the variable that is expected to change because of the manipulated variable. You will measure it during the experiment. |
| Controlled Experiment | This experiment is where all variables are kept the same except for one.( The manipulated variable). ex: soil,water,type of plant. |
| Data | These are facts, figures and other evidence gathered through observation. |
| Communicating | This is sharing ideas and conclusions with others through writing and speaking. |
| Scientific Law | This is a statment that describes what scientists expect to happen every time under a particular set of conditions. It is no longer tested. |
| Scientific Theory | This is a well tested explanation for a wide range of observations or experimental results. It is still tested and subject to change. The world is flat. |
| Technology | This is a way of changing the natural world to meet human needs or solve problems. |
| Engineer | This is a person who is trained to use both technological and scientific knowledge to solve practical problems. |
| Brainstorming | This is a process in which group members freely suggest any creative solutions that come to mind. |
| Constraint | This is any factor that limits or restricts a design. Can't test everyone so we test a sample. |
| Trade Off | This is an exchange in which one benefit is given up in order to obtain an other. |
| Prototype | This is a working model that is used to test a design that an engineer comes up with. |
| Trouble shoot | This is the name given to when you analyze a design problem and find a way to fix it. |
| System | This includes a goal,input,process,output, and sometimes feedback. |
| Variable | This is the name given to anything that can cause a change during an experiment. |
| precision | Refers to how close a group of measurements are to each other. |
| accuracy | Refers to how close a measurement is to the true or accepted value. |
| estimate | Scientist must sometime rely on ___ when they cannot obtain the exact number. |
| random | Measurements that are neither precise or accurate are said to be __. |
| significant figures | In a measurement , they include all of the digits that have been measured exactly, plus one digit whose value has been estimated. |
| two | I am certain of 5 in the ones column but am estimating 3 in the tenths column so my ___ has one exact figure and one estimated one for a total of 2 significant figures which is 5.3 |
Created by:
aubiefan
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