| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.47 |
| Score | 0% | 69% |
Water has a refractive index of 1.33. Which of the following is true?
light is 1.33 times dimmer in a vacuum than it is in water |
|
light travels 1.33 times faster in a vacuum than it does in water |
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light is 1.33 times brighter in a vacuum than it is in water |
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light travels 1.33 times slower in a vacuum than it does in water |
The speed of light varies based on the material that the waves are passing through. The refractive index of a material indicates how easily light travels through it compared to how easily light travels through a vacuum. For example, the refractive index of water is 1.33, meaning that light travels 1.33 times faster in a vacuum than it does in water.
DNA is encoded through a combination of which of the following?
genes |
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gametes |
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nucleotides |
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helix |
Deoxyribonucleic acid (DNA) is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern.
__________ is caused by a lack of iron in the diet.
diabetes |
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scurvy |
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shingles |
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anemia |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
A __________ is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound.
neutron |
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molecule |
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ion |
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isotope |
A molecule is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound. The molecules of elements consist of two or more similar atoms, the molecules of compounds consist of two or more different atoms.
The gravitational interaction of Earth and the Moon is responsible for which of these?
day and night cycle |
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seasons |
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tides |
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the northern lights |
Tides are caused by the gravitational interaction of Earth and the Moon.