| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
In the metric system, what prefix represents 10-3?
milli |
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kilo |
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mega |
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centi |
In the metric system, milli is the prefix for 10-3.
Elements in the Periodic Table of the Elements are ordered by which of the following?
atomic weight |
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number of electron shells |
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atomic number |
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atomic mass |
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.
The formula for acceleration is which of the following?
\(\vec{a} = \vec{F} m\) |
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\(\vec{a} = { m \over \vec{F} }\) |
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\(\vec{a} = { m \over F }\) |
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\(\vec{a} = { \vec{F} \over m }\) |
Newton's second law of motion leads to the formula for acceleration which is a measure of the rate of change of velocity per unit time and, if you solve for positive acceleration, reveals how much net force is needed to overcome an object's mass. The formula for acceleration is \(\vec{a} = { \vec{F} \over m }\) or, solving for force, \(\vec{F} = m\vec{a}\).
Menstruation occurs when:
the zygote is formed |
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the ovum fails to become fertilized |
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the ovum becomes fertilized |
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the fetus is formed |
If the ovum fails to become fertilized, the lining of the uterus sloughs off during menstruation. From puberty to menopause, this cycle of menstruation repeats monthly (except during pregnancy).
All surface water is part of the:
hydrosphere |
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atmosphere |
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geosphere |
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lithosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).