| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
The asteroids in the Kuiper belt are composed of which of the following?
frozen methane, ammonia, and water |
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gaseous methane, ammonia, and water |
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rock |
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minerals |
The Kuiper Belt is similar to the asteroid belt but much larger. Extending beyond the orbit of Neptune, it contains objects composed mostly of frozen methane, ammonia, and water. Most notably, the Kuiper Belt is home to Pluto, a dwarf planet that, until a 2006 reclassification, was considered the ninth planet of the solar system.
The gravitational interaction of Earth and the Moon is responsible for which of these?
tides |
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day and night cycle |
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seasons |
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the northern lights |
Tides are caused by the gravitational interaction of Earth and the Moon.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
inherent |
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kinetic |
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potential |
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gravitational |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
Which of the following states of matter exists at the highest temperature?
none of these |
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liquid |
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solid |
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gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Which of the following is the formula for work?
\(W = \vec{F}\vec{d}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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\(W = {F}{d}\) |
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\(W = {{F}\over{d}}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)