| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Which of the following is the correct order for types of radiation from lowest to highest frequency?
radio waves → visible light → gamma rays |
|
microwaves → radio waves → visible light |
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visible light → ultraviolet light → radio waves |
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infrared waves → microwaves → ultraviolet light |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.
__________ is caused by a lack of Vitamin C.
shingles |
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anemia |
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diabetes |
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scurvy |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
The respiratory and circulatory systems are similar in that they:
transport oxygen |
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transport nutrients |
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deoxygenate blood |
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add carbon dioxide |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
products |
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components |
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fuel |
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reactants |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
Which of the following is not true of light waves?
travel faster than sound waves |
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are mechanical waves |
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are electromagnetic waves |
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can travel through a vacuum |
Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.