Question 1: How many chambers are there in the human heart?
Question 2: Where is the Horsehead Nebula located?
The Horsehead Nebula is a dark nebula located in the constellation of Orion. It is approximately 1500 light years from Earth and is one of the most identifiable nebulae due to its shape resembling a horse's head.
Question 3: What major car company was the first to implement the assembly line for mass production?
Henry Ford introduced the first moving assembly line for the mass production of an entire automobile in 1913. This innovation reduced the time it took to build a car from more than 12 hours to one car every one hour and 33 minutes. The assembly line transformed the automotive industry and ushered in an era of mass-produced and more affordable vehicles.
Question 4: Who invented the modern hamburger?
Louis' Lunch, a small lunch wagon in New Haven, Connecticut, is credited with inventing the modern hamburger when Louis Lassen placed ground beef trimmings between two slices of bread for busy local factory workers in 1900.
Question 5: If laid end to end, how many Eiffel Towers would it take to span the English Channel between England and France?
The English Channel is 350 miles (560 km) long at its widest point. The Eiffel Tower stands 324 meters (1,063 ft) tall. So it would take approximately 161 Eiffel Towers laid end to end to span the English Channel.
Question 6: How many years did it take to invent the light bulb after the first experiments by Humphry Davy?
The first experiments with electric light were conducted by Humphry Davy in 1802. However, it wasn't until 1879 that Thomas Edison patented the first commercially successful light bulb, 79 years later. Edison's design was the first to last long enough and be bright enough for practical indoor use.
Question 7: If Hanukkah begins on the 25th day of the Jewish month of Kislev, on what day does it typically end?
Hanukkah lasts for eight days. The Jewish calendar is a lunar calendar, so the exact dates of Hanukkah change from year to year relative to the Gregorian calendar.
Question 8: Why does "K" stand for Potassium on the periodic table?
The symbol K comes from kalium, the Medieval Latin word for potash, which contains potassium in water-soluble compounds. The chemical symbol for potassium is K, not P, to avoid confusion with the symbol for phosphorus.
Question 9: If a day is the time it takes for a planet to spin once on its axis, how long is one day on Jupiter?
Despite being much larger than Earth, Jupiter spins very quickly, completing a full rotation in just under 10 hours. This fast spin is thought to be a result of Jupiter's formation process and its gaseous composition.
Question 10: In Greek mythology, who was the Queen of the Underworld?
Persephone was the daughter of Zeus and Demeter. She became Queen of the Underworld after being abducted by Hades.
The human heart has four chambers - two atria and two ventricles. The right atrium receives deoxygenated blood from the body while the left atrium receives oxygenated blood from the lungs. The ventricles pump the blood out to the body and lungs.