SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Earth
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Mars
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Pluto
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Venus
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Detailed explanation-1: -Pluto used to be the smallest planet, but it’s not a planet any more. That makes Mercury the smallest planet in the Solar System.
Detailed explanation-2: -Mercury is the smallest planet in our solar system – only slightly larger than Earth’s Moon.
Detailed explanation-3: -In fact, Mercury is closer in size to our Moon than to Earth. In case you’re wondering, though, Mercury is still significantly larger than the dwarf planet Pluto: Pluto’s equatorial diameter is just 2, 302 km, about half Mercury’s width.
Detailed explanation-4: -Pluto is about 5.5 times smaller than Earth, or about two-thirds the diameter of the Moon. Side by side, Pluto and Charon would barely span the United States. The next-largest objects in Pluto’s Kuiper Belt neighborhood – at least among the objects we’ve discovered so far – are Eris and Makemake.
Detailed explanation-5: -When New Horizons arrived at Pluto, it measured the diameter of the world to be 1, 473 miles (2, 370 kilometers) across, about two-thirds the diameter of Earth’s moon.