| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
Velocity is the rate at which an object changes position. What is the formula for velocity?
\(\vec{v} = { t \over \vec{d} } \) |
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none of these |
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\(\vec{v} = { \vec{d} \over t } \) |
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\(\vec{v} = \vec{d}t \) |
Velocity is the rate at which an object changes position. Rate is measured in time and position is measured in displacement so the formula for velocity becomes \(\vec{v} = { \vec{d} \over t } \)
Atoms of an element whose atoms can vary in the number of neutrons in their nucleus are called which of the following?
reactants |
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products |
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ions |
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isotopes |
The atomic mass of an element listed in the Periodic Table represents the average mass of a single atom of that element and is measured in atomic mass units (amu). This number is an average as some elements have isotopes with atoms that vary in their number of neturons and, therefore, differ in weight.
Which of these vitamins doesn't come from food?
C |
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Potassium |
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D |
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A |
Vitamins are necessary for a wide variety of bodily processes. Some vitamins like Vitamins A and C come from diet but others, like Vitamin D, are generated in response to sunlight.
In the classification of life, which of the following is not a domain?
bacteria |
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archaea |
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eukaryota |
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animalia |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
In taxonomy, domains are the broadest classification of life. How many domains are there?
6 |
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dozens |
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3 |
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5 |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.