| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.98 |
| Score | 0% | 60% |
Which of the following represents the largest value?
1 kL |
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1 mL |
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1 cL |
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1 ML |
Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.
Which of these is not a function of bone in the human skeletal system?
produce blood cells |
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protect bodily organs |
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store minerals |
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store vitamins |
Hard bones provide primary support for the endoskeleton while more flexible cartilage is found at the end of all bones, at the joints, and in the nose and ears. In addition to providing support and protecting bodily organs, bones also produce blood cells and store minerals like calcium.
In the heart, blood flows from the __________ ventricle to the lungs then back to the heart via the __________ atrium.
right, right |
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left, left |
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left, right |
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right, left |
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.
Earth's history is divided into time periods, which of these is the longest time period?
age |
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epoch |
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eon |
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era |
The Earth is approximately 4.6 billion years old and its history is divided into time periods based on the events that took place and the forms of life that were dominant during those periods. The largest graduation of time is the eon and each eon is subdivided into eras, eras into periods, periods into epochs, and epochs into ages.
Which of the following is not true about mass and weight?
mass depends on the location where it is measured |
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weight depends on the location where it is measured |
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weight is the force exerted on an object by gravity |
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mass is the amount of matter something has |
Mass is the amount of matter something has while weight is the force exerted on an object's mass by gravity. So, although a person's mass doesn't change when going from the Earth to the Moon, their weight will decrease because the force of the Moon's gravity is much less than that of Earth.