| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.73 |
| Score | 0% | 55% |
During digestion, after proteins are broken down where does the undigested food go next?
esophagus |
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small intestine |
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stomach |
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large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of these is a type of Earth's crust?
terrestrial |
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sedimentary |
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oceanic |
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metamorphic |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.
What kind of weather front is likely to create clouds and storms?
temperate front |
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stationary front |
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warm front |
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cold front |
A warm front is the boundary between warm and cool (or cold) air when the warm air is replacing the cold air. Warm air at the surface pushes above the cool air mass creating clouds and storms.
In the classification of life, which of the following is not a domain?
archaea |
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bacteria |
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animalia |
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eukaryota |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Which of the following is the primary difference between a comet and an asteroid?
comets orbit the Sun |
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asteroids contain frozen water |
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comets have an atmosphere |
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asteroids have a coma |
A comet is a loose collection of ice, dust, and small rocky particles that, in contrast to an asteroid, has an extended atmosphere surrounding the center. When passing close to the Sun, this atmosphere warms and begins to release gases forming a visible coma or tail.