Which of the following describes an independent variable
Answers
Answer:
D. The variable in an experiment that is manipulated by the scientist.
Explanation:
The independent variable is what is purposely changed or controlled to see what the effect is.
Hope this helps!
Answer:
the variable is an experiment that is manipulated by the scientist
Explanation:
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how to separate salt and sugar?
Answers
Mixing the mixture of salt and sugar into alcohol will make the sugar dissolve into the alcohol leaving the salt behind, because it is organic, you can then filter this mixture of alcohol, sugar and salt to get the salt. Then to get the sugar all you need to do is evaporate the alcohol. Then you have your sugar and salt separate.
Answer:
How to Separate Salt and Sugar
-Consider a simpler, safer alternative for a science experiment.
-Add ethanol to your salt and sugar mixture.
-Mix the solution with a spoon or a stir stick to dissolve the sugar.
-Pour the alcohol solution through a very fine strainer, and into the new container.
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Answer:
Blaming someone for what someone else did
Explanation:
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Material
Interactions
List any observations you made as the light rays passed from the air on the top of the screen to the selected material on the bottom of the screen.
Evidence
Using the protractor, measure the angle as the light passes from the top material to the bottom material on the screen. Also, note the index of refraction for each as indicated on the screen.
Trial One
Air on top
Angle:
Index of refraction:
Air on bottom
Trial Two
Air on top
Angle:
Index of refraction:
Water on bottom
Trial Three
Air on top
Angle:
Index of refraction:
Glass on bottom
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In this lab report, you are required to record data and observations about the properties of light as it passes through different materials. You will fill in a data chart with information from each trial.
For each trial, you will have air on the top and a different material on the bottom of the screen. As the light rays pass from the air to the material, you need to make observations and note any changes you see. These observations could be related to how the light behaves or any visible effects.
Next, you need to measure the angle as the light passes from the top material to the bottom material using a protractor. Additionally, note the index of refraction for each material as indicated on the screen.
Here is a step-by-step breakdown of what you need to do:
1. Trial One:
- Air on top
- Make observations as the light rays pass from the air to the selected material on the bottom.
- Measure the angle using a protractor.
- Note the index of refraction for each material.
2. Trial Two:
- Air on top
- Make observations as the light rays pass from the air to the selected material on the bottom.
- Measure the angle using a protractor.
- Note the index of refraction for each material.
3. Trial Three:
- Air on top
- Make observations as the light rays pass from the air to the selected material on the bottom.
- Measure the angle using a protractor.
- Note the index of refraction for each material.
Remember to fill in the data chart completely for each trial, including the angles and index of refraction values.
I hope this explanation helps you understand what you need to do in your Properties of Light Lab Report. If you have any further questions, feel free to ask!
Answer: 1.Trial One
2.Trial two
3.Trial three
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In other words, heat-trapping gases contribute to creating the cooling conditions in the atmosphere that lead to ozone depletion. Greenhouse gases absorb heat at relatively low altitudes and warm the surface--but they have the opposite effect in higher altitudes because they prevent heat from rising.