| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
A large naturally occurring community of flora and fauna occupying a major habitat is:
a community |
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a population |
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a food chain |
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a biome |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
The connective tissue that connects bones to other bones at joints is called:
tendons |
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knuckles |
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cartilage |
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ligaments |
Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints (elbow, knee, fingers, spinal column).
In the heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, atrium |
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ventricle, atrium |
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ventricle, ventricle |
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atrium, ventricle |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas is called:
conduction |
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diffusion |
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convection |
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radiation |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. Examples of heat transfer by convection include water coming to a boil on a stove, ice melting, and steam from a cup of coffee.
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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water |
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acidic |
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alkaline |
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.