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Bio 1 Ch 1 Test
Inquiry & Lab Safety
| Question | Answer |
|---|---|
| A ___ is a reasonable explanation of an observation or experimental result or a possible answer to a scientific question that can be tested | hypothesis |
| The hypothesis may or may not be supported by the ___. | experimental results |
| The ___ support or do not support the hypothesis. | results |
| When hypotheses are tested over and over again and not contradicted, they may become known as ___ or ___. | laws or principles |
| The variable in an experiment that is changed. | independent |
| The variable in an experiment that is measured. | dependent |
| Identify the independent & dependent variables in the following hypothesis: If a leaf has a greater surface area, then the rate at which it produces oxygen may increase. | Indep: surface area Dep: amount of oxygen produced |
| Identify the independent & dependent variables in the following hypothesis: As the volume of the lungs increases, the rate at which breathing occurs decreases. | Indep: volume of lungs Dep: rate of breathing |
| Identify the independent & dependent variables in the following hypothesis: At warmer temperatures, mold will grow faster on bread. | Indep: temperature Dep: rate of mold growth |
| When generating a hypothesis the sources should be ___, ___, and ___. | credible, accurate, relevant |
| A credible source would be considered ___. | trustworthy |
| An accurate source would be considered ___. | correct and based on supported data |
| A relevant source would be considered ___. | applicable or related to the topic of the investigation. |
| Scientists use the ___ system of measurement. | SI (metric) |
| milli | thousandth (0.001) |
| centi | hundredth (0.01) |
| The base units of the metric system are the ___, ___, and ___. | meter, liter, gram |
| Method of measurement used to measure length= | meter (m) |
| Method of measurement used to measure volume= | liter (L) |
| Method of measurement used to measure mass= | gram (g) |
| kilo | thousand (1000) |
| deci | tenth (0.1) |
| deka | ten (10) |
| hecto | hundred (100) |
| precision | a measure of the degree to which measurements made in the same way agree with one another. |
| A hypothesis predicts the ___ between the independent and dependent variables in an experiment. | relationship |
| ___ ___ are designed to answer a question about the "cause-effect" relationship between two variables. | scientific investigations |
| In a scientific investigation the independent variable is the "___" and the dependent variable is the "___" relationship. | cause; effect |
| In a scientific investigation, only ___ variable is tested at a time. | one |
| In a scientific investigation, the variables which are held constant are called ___ variables. | controlled |
| The ___ group is the group to which the independent variable is applied. | experimental |
| The ___ group is the group to which the independent variable is not applied. | control |
| The fewest number of trials required in a scientific investigation to ensure accuracy is ___. | three |
| When graphing data, the independent variable is plotted on the "__" axis. | X |
| When graphing data, the dependent variable is plotted on the "__" axis. | Y |
| Another name for the dependent variable is ___. | responding |
| Another name for the independent variable is ___. | manipulated |
| ___ are used to represent a concept or system so that the concept may be more easily understood and predictions can be made. | Models |
Created by:
Ms. Phillips
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