| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
Which of the following is not a medium for sound waves?
solid |
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none of these is a medium for sound waves |
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liquid |
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vacuum |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
The energy posessed by a thrown baseball is an example of what kind of energy?
kinetic |
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gravitational |
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potential |
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transitional |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
Reproductive haploids are also known as:
diploids |
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gametes |
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ovum |
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sperm |
Reproductive (haploid) cells known as gametes have half as many (23) pairs of chromosomes as normal (diploid) cells. When the male gamete (sperm) combines with the female gamete (ovum) through meiosis to form a zygote, each gamete supplies half the chromosomes needed to form the normal diploid cells.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
atom |
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element |
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compound |
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molecule |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
The respiratory and circulatory systems are similar in that they:
transport oxygen |
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transport nutrients |
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add carbon dioxide |
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deoxygenate blood |
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.