| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.89 |
| Score | 0% | 58% |
Which of the following describes the Earth's outer core?
makes up most of the Earth's volume |
|
liquid |
|
primarily solid |
|
solid |
The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).
When two air masses meet and neither is displaced, what kind of front is present?
warm |
|
occluded |
|
stationary |
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cold |
When two air masses meet and neither is displaced, a stationary front is created. Stationary fronts often cause persistent cloudy wet weather.
Cellular fermentation takes place:
in plant cells |
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aerobically |
|
in the presence of oxygen |
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anaerobically |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
In the Periodic Table of the Elements, atomic number is equal to which of the following?
number of protons in the nucleus |
|
number of electrons orbiting the nucleus |
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number of neutrons in the nucleus |
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number of protons + neutrons in the nucleus |
The Periodic Table of the Elements categorizes elements primarily by the number of protons in their nucleus (atomic number) and secondarily by the characteristics they exhibit.
Someone who has Rh-factor __________ blood cannot receive blood with a __________ type.
negative, positive |
|
positive, antigen |
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antigen, negative |
|
positive, negative |
Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.