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NMS PS 1
SOL PS 1
| Question | Answer |
|---|---|
| state the question or problem | first step; the purpose of the experiment |
| research | using computers, books, and interviews to find out information about the topic before making a hypothesis |
| hypothesis | an educated guess about the outcome of an experiment; must be testable |
| Experiment | testing the hypothesis |
| Independent Variable | what is changed on purpose at the beginning of the experiment; manipulated variable |
| Dependent Variable | what is measured in the end; responding variable |
| constants | things that remain the same throughout the experiment; not changing |
| control | the normal or plain way of doing something that is used as a comparison group |
| procedures | directions for completing an experiment |
| data | information collected during an experiment |
| record and analyze data | step that involves creating a graph |
| conclusion | the last step; a statement as to whether or not the hypothesis is supported by the data or not |
| repeated trials | the number of times the experiment is performed; each trial should be done the exact same way |
| Example of a Problem | What is the effect of the color of light on plant growth? |
| Example of research | interview an expert |
| Example of a hypothesis | If different colored lights are used, then a plant will grow the tallest in white light. |
| Example of procedures | 1. Measure the starting height of 9 plants. 2. Place 3 plants in white light, 3 plants in red light, and 3 plants in purple light. 3. Water the plants daily for 1 week 4. Measure the height of the 9 plants to determine how much each plant has grown. |
| Example of an independent variable | color of the light bulbs |
| example of a dependent variable | growth of the plant |
| Examples of constants | soil, water, type of plant, time under lights |
| Example of a control | plants growm in white or yellow light |
| Example of a conclusion | The hypothesis was supported by the data because the plants grown in white light grew the most in the 1 week period of time. |
| Example of quantitative data | 2inches taller, 4 flowers, 10 leaves |
| Examples of Qualitative data | yellowish leaves, wilted stem |
| Example of repeated trials | 3 plants under each bulb |
| qualitative observations | not measurable such as color, texture, smell, taste |
| quantitative observations | can be measured to provide a number such as length, weight, temperature, time |
| length | distance between two points, includes height |
| mass | amount of matter in the object |
| weight | pull of gravity on the mass of an object |
| volume | amount of space an object occupies |
| density | amount of matter in a certain space (mass/volume) |
| balance | tool used to measure mass in grams |
| graduated cylinder | tool used to measure liquid volume in mL |
| water displacement | using a change in water level to determine the volume of an object |
| meter | basic unit of length in the metric system (SI) |
| liter | basic unit of volume in the metric system (SI) |
| gram | basic unit of mass in the metric system (SI) |
Created by:
sford
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