| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
Convert 5C° to F°.
41 |
|
27 |
|
37 |
|
-23 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
A subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. This desribes which of the following?
proton |
|
isotope |
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electron |
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neutron |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
Blood is circulated throughout the body via:
capillaries |
|
veins |
|
aorta |
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arterioles |
The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart. Finally, blood is delivered to bodily tissues through capillaries.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
vertebrate |
|
bone |
|
exoskeleton |
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endoskeleton |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
Which of the following is not a medium for sound waves?
solid |
|
none of these is a medium for sound waves |
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vacuum |
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liquid |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.