| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.76 |
| Score | 0% | 75% |
An asteroid belt holds many of the asteroids in our solar system. It is located between the orbits of which planets?
Mercury and Venus |
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Mars and Earth |
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Jupiter and Saturn |
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Mars and Jupiter |
The solar system also contains over a million rocky fragments of at least 1km in diameter called asteroids as well as millions more with smaller diameters. Many of these asteroids are an asteroid belt between the orbits of Mars and Jupiter.
"The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object." This describes which of Newton's laws of motion?
second |
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third |
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first |
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fourth |
Newton's second law of motion states that The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. This law basically means that the greater the mass of an object, the more force is needed to overcome its inertia.
The heat from the Sun traveling to Earth is an example of which of the following?
convection |
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electricity |
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radiation |
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conduction |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
exoskeleton |
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endoskeleton |
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vertebrate |
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bone |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
The respiratory and circulatory systems are similar in that they:
add carbon dioxide |
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transport nutrients |
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deoxygenate blood |
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transport oxygen |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.