| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
The heat from the Sun traveling to Earth is an example of which of the following?
electricity |
|
convection |
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conduction |
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radiation |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
Elements in the Periodic Table of the Elements are ordered by which of the following?
atomic number |
|
atomic mass |
|
number of electron shells |
|
atomic weight |
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.
Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.
fewer |
|
equal numbers of |
|
more |
|
double the number of |
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.
Which of the following does not represent the freezing point of water?
0°C |
|
273K |
|
0°F |
|
32°F |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
Which of the following describes how a person's genes express themselves in physical characteristics?
phenotype |
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genotype |
|
chromotype |
|
DNA |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.