| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.52 |
| Score | 0% | 70% |
Meteoroids, meteors and meteorites are categorized based on which of the following?
their location |
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their size |
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their density |
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their temperature |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
vertebrate |
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bone |
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endoskeleton |
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exoskeleton |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following?
radiation |
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convection |
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conduction |
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reflection |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
Which of blood component allows blood to clot?
white blood cells |
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red blood cells |
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platelets |
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plasma |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
Which of blood component carries oxygen?
white blood cells |
|
platelets |
|
red blood cells |
|
plasma |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.