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Scientific Invest.
Scientific Investigations Questions and Terms
| Question | Answer |
|---|---|
| What is a possible explanation for a set of observations or a possible answer to a scientific question. | hypothesis |
| All factors that can change in an experiment are called | variables |
| An experiment in which only one variable is changed at a time is called a | controlled experiment |
| When an experiment is done, what do scientists do with the data? | They analyze it |
| What do scientists use to organize, present, and interpret data? | tables, charts, and graphs |
| What do scientists do after gathering and interrupting data? | They draw conclusions about their hypotheses |
| The variable that is purposely changed to test a hypothesis is called the | manipulated variable |
| Manipulated variables are also sometimes called | independent variables |
| The factor that may change in response to the manipulated variable is called the | responding variable |
| Responding variables are also sometimes called | dependent variables. |
| All of the other variables or factors, besides the manipulated and responding variables, are known as controlled variables or | constants |
| Why do scientists carefully control their variables | so they can understand how a particular variable affects the system as a whole |
| sometimes scientists collect data that is contradictory or unusual. Why should they do when this happens? | the scientist should carefully go over the investigation’s design to make sure that there is only one manipulated variable in the experiment. |
| Collecting data can be done in many different ways, such as | observing, measuring or counting,asking questions,performing an experiment |
| ____ allow a lot of information to be presented in a small space | Tables |
| _____are best used to show a relationship between two measured quantities, usually as a trend over time. | Line graphs |
| ____are best used for counting and to show how a number of objects or events compare in relationship to a single property. | Bar graphs |
| Section sizes in a pie chart correspond to the amount of the whole that it represents or | the percentage |
| Tables allow a lot of information to be presented in a small space by | organizing data efficiently |
| While tables are used for organizing information, graphs are used to | present information visually |
| biologists need to collect evidence through | scientific investigations |
| what are the five basic steps most scientific investigations have? | Forming a Hypothesis, Testing a Hypothesis,Data Collection, Interpreting Data, and Communicating Results |
| Communicating results helps scientists | learn from one another |
| how does the variable in an experiment help scientists? | the variable in a controlled experiment differs between the control group and the experimental groups |
| involve the senses of sight, hearing, touch, and smell | observations |
| Balance, Graduated Cylinder, Microscope, Spring scale, Thermometer, Test tube are examples of what? | tools that increase the power of their senses or make observations more precise |
Created by:
amandahase
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