| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
Velocity is the rate at which an object changes position. What is the formula for velocity?
none of these |
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\(\vec{v} = { \vec{d} \over t } \) |
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\(\vec{v} = { t \over \vec{d} } \) |
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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 \(\vec{v} = { \vec{d} \over t } \)
pH is a scale that measures of how basic or acidic a solution is. A solution with a pH of 9 is:
neutral |
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acidic |
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alkaline |
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water |
An acid is a substance that gives up positively charged hydrogen ions (H+) when dissolved in water. A base (alkaline) gives up negatively charged hydroxide ions (OH-) when dissolved in water. pH is a scale that measures of how basic or acidic a solution is. Numbered from 0 to 14, solutions with a pH of 7 are neutral, less than 7 are acidic, more than 7 are alkaline.
The large intestine does which of the following?
breaks down fats |
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breaks down starches |
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breaks down proteins |
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processes the physical waste produced by digestion |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.
Convert 5C° to F°.
-23 |
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27 |
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41 |
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37 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
plants |
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habitats |
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animals |
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minerals |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).