| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Which of the following states of matter exists at the lowest temperature?
gas |
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liquid |
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solid |
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none of these |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
A large naturally occurring community of flora and fauna occupying a major habitat is:
a biome |
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a food chain |
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a community |
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a population |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
A dominant trait will be expressed when paired with:
a chromosome |
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a dominant trait |
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a recessive trait |
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a gene |
The traits represented by genes are inherited independently of each other (one from the male and one from the female gamete) and a trait can be dominant or recessive. A dominant trait will be expressed when paired with a recessive trait while two copies of a recessive trait (one from each parent) must be present for the recessive trait to be expressed.
Which is the proper order of Earth's atmospheric layers from the surface up to space?
thermosphere, mesosphere, stratosphere, troposphere |
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troposphere, stratosphere, mesosphere, thermosphere |
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stratosphere, troposphere, mesosphere, thermosphere |
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mesosphere, thermosphere, stratosphere, troposphere |
The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.
The formula for acceleration is which of the following?
\(\vec{a} = { m \over \vec{F} }\) |
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\(\vec{a} = { \vec{F} \over m }\) |
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\(\vec{a} = \vec{F} m\) |
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\(\vec{a} = { m \over F }\) |
Newton's second law of motion leads to the formula for acceleration which is a measure of the rate of change of velocity per unit time and, if you solve for positive acceleration, reveals how much net force is needed to overcome an object's mass. The formula for acceleration is \(\vec{a} = { \vec{F} \over m }\) or, solving for force, \(\vec{F} = m\vec{a}\).