| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
Which of the following is the narrowest classification of life?
domain |
|
genus |
|
family |
|
species |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
What type of cloud is responsible for fog?
stratus |
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cumulonimbus |
|
cirrus |
|
cumulus |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
Which of these does not contain oxygenated blood?
right atrium |
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aorta |
|
pulmonary vein |
|
left ventricle |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
The coldest point in the Earth's atmosphere is reached in which atmospheric layer?
thermosphere |
|
mesosphere |
|
troposphere |
|
stratosphere |
In the mesosphere, temperature again drops as altitude increases until the coldest point in the Earth's atmosphere, the mesopause, is reached where temperatures fall to −225 °F (−143 °C).
Which of the following is not a method of heat transfer?
conduction |
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radiation |
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reflection |
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convection |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.