Question 1: The invention of which practical home appliance is credited to American Richard W. Sears and Alvah C. Roebuck?
Question 2: The Earth's outermost layer is called?
The Earth's crust is primarily composed of two types - oceanic crust, which makes up the ocean floors, and continental crust, which forms the continents. The crust is divided into several tectonic plates, which can move and interact, resulting in earthquakes and volcanic activity.
Question 3: Which element has the atomic number 1?
Hydrogen is the lightest and most abundant element in the universe, constituting roughly 75% of its elemental mass.
Question 4: Where does the Marvel superhero Spider-Man primarily operate?
Spider-Man, or Peter Parker, is often seen swinging through the streets of New York City, protecting its citizens from various villains and crime. New York City is also home to many other Marvel superheroes.
Question 5: Why does a helium-filled balloon rise in the air?
Helium is lighter than air due to its lower molecular weight. Because of this, a helium-filled balloon is buoyant and rises in the air, displacing the heavier surrounding atmosphere.
Question 6: Which number represents one million in Roman numerals?
Roman numerals use a combination of letters from the Latin alphabet to represent numbers. A horizontal line above a numeral, such as M, indicates that it should be multiplied by 1,000. Therefore, M with a horizontal line above it represents one million.
Question 7: How many grapes does it generally take to make one bottle of wine?
It takes approximately 600-800 grapes, or around 4.5 pounds of grapes, to make one 750ml bottle of wine. The number can vary depending on the grape variety and wine production process.
Question 8: Who is the author of the book "Silent Spring"?
"Silent Spring," published in 1962 by Rachel Carson, is a landmark book in environmental science. It helped to raise awareness about the dangers of pesticide use, particularly DDT, and ultimately led to a greater focus on environmental conservation.
Question 9: How many buttons are there on a traditional QWERTY keyboard?
A standard QWERTY keyboard has 104 keys, including the letters, numbers, punctuations, specialized keys like shift and enter, and the function keys. The QWERTY keyboard layout was developed in the late 1800s by Christopher Latham Sholes.
Question 10: Where is the world's largest arts festival held annually?
The Edinburgh Festival Fringe is the world's largest arts festival, taking place every August in Scotland's capital. It hosts thousands of performances and attracts millions of visitors each year.
The washing machine's earliest patent was filed in 1851, but Sears and Roebuck introduced a more practical and popular design in 1908. Their design, called the "1908 Thor," significantly improved the process of washing clothes at home.