How many can you get right? A tricky 3-choice trivia quiz you'll want to tell someone about

Silver and gold plating

Olympic gold medals are actually not made of solid gold. According to the regulations of the International Olympic Committee (IOC), a gold medal must be made of at least 92.5% silver and plated with at least 6 grams of gold on its surface. This standard has remained unchanged since the 1912 Stockholm Olympics. Therefore, a gold medal is essentially composed of silver with a gold plating.

Because the kelp is alive

The reason kombu doesn’t release its broth (dashi) is that the kelp is alive and its cells prevent the flavor compounds from leaking out. While the kombu is alive, its cell membranes function properly, so the umami components do not escape. In contrast, once kombu is harvested and dried, the cell membranes stop functioning, and adding water makes it easier for the umami components to be released.

airplane

There are various standards and statistics regarding safety, but in general, airplanes are said to be the safest because they have highly advanced safety regulations and multiple overlapping safety systems. Their accident rate is also significantly lower compared to other modes of transportation, and because operational safety management is rigorous, actual accidents are extremely rare, making this option considered the safest. However, survival rates and impacts when accidents do occur differ from those of other means of transportation, so safety should be considered from multiple perspectives.

50 pieces

The stars depicted on the American flag represent the 50 states that make up the United States. The number of stars became 50 when Alaska and Hawaii were admitted as states in 1959.

I'm not thinking about anything.

The Thinker is a famous sculpture created by Auguste Rodin that depicts a man deep in contemplation. However, there is no definitive answer as to what the figure is thinking; it leaves interpretation to the viewer. In that sense, the statue itself can be said to be “thinking about nothing.” Through its form, the sculpture invites viewers to form their own interpretations.

Beige

The color of the universe is a beige-like hue, also known as “cosmic latte.” Astronomers at Johns Hopkins University named this color after analyzing the spectrum of light from the entire universe. Their results show that the average light from countless stars blends together to produce this specific color.

to promote saliva secretion

The reason rock sugar is included is that it serves as a source of sugar and helps stimulate saliva production. Since hardtack is a dry food and can make it difficult to produce saliva, rock sugar is added to make it easier to eat.