[For Seniors] Which Is Bigger? A Size Comparison Quiz That’s Sure to Get Everyone Excited
Have you ever been asked, “Which one is bigger?” and been startled by an unexpected answer? For older adults, quizzes that compare the sizes of familiar objects or well-known places make for enjoyable brain training that keeps the mind active.
From animals and buildings to famous tourist spots, there are surprising discoveries waiting—things you thought you knew but didn’t.
The joy of finding the correct answer and the fresh surprise of “Oh, so that’s how it is!” can also spark conversation.
This time, we’re introducing a “Which is bigger?” quiz that you can enjoy together with older adults.
Be sure to think it through with those around you and spend a smile-filled time together.
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[For Seniors] Which Is Bigger? A Size-Comparison Quiz That’s Sure to Get Everyone Excited (21–30)
Which is bigger, a volleyball or a basketball?
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Basketball
A basketball has a diameter of 24.5 cm, while a volleyball’s is 21 cm. At first glance they may look the same size, but the basketball is actually larger. Since both are popular sports, this is a handy bit of trivia for anyone thinking of getting started.
Which is larger, Mars or Mercury?
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Mars
Mercury has a diameter of about 4,879 km, which is smaller than Earth’s radius. Mars has a diameter of 6,779 km, about half that of Earth. Therefore, Mars is the larger of the two.
Which is larger in the deep-sea anglerfish, the female or the male?
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female
While female anglerfish are about 80 cm long, males are only about 10 cm. This shows that females are larger. It’s very rare to see such a big difference in size. The reason may be related to the anglerfish’s ecology. Deep-sea fish are truly fascinating creatures.
Which is bigger, Universal Studios Japan or Tokyo DisneySea?
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Universal Studios Japan
Universal Studios Japan is 0.54 km² and Tokyo DisneySea is 0.49 km², so Universal Studios Japan is larger. Both are popular theme parks, so their areas may be expanded further in the future.
Which is larger, Monaco or Tuvalu?
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Tuvalu
Monaco is 2 km² and Tuvalu is 26 km². Tuvalu is a beautiful island nation surrounded by coral reefs, but it is said that if sea levels keep rising, the country could sink into the ocean.
Which is larger, Guam or Lake Biwa?
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Lake Biwa
Lake Biwa has an area of 670.4 km², and Guam has an area of 549 km², so Lake Biwa is larger. Guam is a popular resort destination known for activities you can enjoy in its beautiful sea. Lake Biwa is the oldest lake in Japan and is said to be home to many living creatures.
Which is larger, the turkey or the whooping crane?
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Sarus Crane
The turkey is 120 cm, and the sarus crane can reach up to 156 cm, so the sarus crane is larger. Turkeys are known as birds eaten at Christmas overseas. The sarus crane, like the ostrich, is famous as one of the tallest flying birds.



