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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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A statement that is made, predicting what might happen in your experiment if you change a variable is called a what? |
Hypothesis |
Usually used "if" and "then" |
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The variable that is changed by the scientist, which is plotted on the x-axis on a graph, is called the ___________ variable? |
Independent / salt water ( how much ) |
Give an example |
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The variable in an experiment in response to what the scientist changed, is called the _________ variable? |
Dependent / whether the plants wilt or not |
Give one example |
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In an experiment, a "control" is usually set up in addition to the "experimental group" why? |
To make sure you get accurate information |
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Give an example of a hypothesis using the "if" an "then". |
If i put a plant in the sun without water then the plant will wilt. |
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Give an example of a hypothesis NOT using the "if" and "then". |
The plant will die because i put it in the sun without water. |
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What do the following microscope parts do? •diaphragm •ocular •nose piece |
Diaphragm : turn to make the intensity of light to change Ocular : eyepiece ( you look into ) Nose piece : two pieces to turn the power |
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Match the names of the microscopes objective lenses. ( scanning, low, high ) to the magnification ( 4x, 10x, 40x ). What is the total magnification if you are using the scanning objective and are looking through an ocular lens with a 10x magnification? |
Scanning - 4x Low - 10x High - 40x 40x total magnification is 100x |
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Which is more precise - measurement of 2.0 or 2.05? |
2.05 |
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You know the measurement results of an object should be 4.0. You measure the object three times and get the following results: 7.1 c.m, 7.4 c.m, 7.0 c.m. Tell why your measurements ARE precise but are NOT accurate? |
Your measurements are per use because you mean shred the object 3 times. They Arendt accurate because the object is 4.0 c.m. |
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