Science & Technology Quiz

Light takes approximately 1.28 seconds to travel from the Moon to Earth. The average Earth-Moon distance is about 384,400 km, and light travels at about 300,000 km/s. Calculating: 384,400 ÷ 300,000 ≈ 1.28 seconds. The other options are incorrect - 8.1 minutes is the time for light from the Sun, 3.2 seconds is too short, and 2.3 minutes is too long.

VY Canis Majoris is a red hypergiant star with one of the largest known radii, approximately 1,420 times that of the Sun. While recent discoveries like UY Scuti may be larger, VY Canis Majoris remains among the largest stars known. Aldebaran and Arcturus are much smaller giant stars, and Antares, while large, is smaller than VY Canis Majoris.

Fred Hoyle coined the term 'Big Bang' during a 1949 radio broadcast as a sarcastic description of the theory he opposed. Ironically, his mocking term became the permanent name for the theory. Georges Lemaître proposed the expanding universe theory (the 'primeval atom' hypothesis), but Hoyle created the famous name we use today.

Apollo-11 was the NASA mission that first landed humans on the Moon on July 20, 1969. Neil Armstrong and Buzz Aldrin became the first humans to walk on the lunar surface while Michael Collins orbited above in the command module. Saturn V was the powerful rocket that launched Apollo-11, not the mission name itself.

Laika, a stray dog from Moscow, became the first animal to orbit Earth aboard Sputnik 2 on November 3, 1957. The Soviet space program used dogs for early spaceflight experiments. Laika's mission was tragically one-way as reentry technology had not been developed yet.

For massive red giants, the next evolutionary stage is a supernova explosion. When a red giant exhausts its nuclear fuel, the core collapses and the outer layers are explosively ejected, creating a supernova. The remnant core may become a neutron star or black hole, while lower-mass red giants become planetary nebulae and white dwarfs.

In computing, a nibble is defined as 4 bits, which is half a byte (8 bits). This is a standard term in digital systems and computer architecture.

Apple Inc. was founded by Steve Jobs and Steve Wozniak in 1976. While Steve Jobs was the public face, Steve Wozniak was the technical co-founder who designed the Apple I and Apple II computers.

C++ was originally named 'C with Classes' by its creator Bjarne Stroustrup when he first developed the language at Bell Labs starting in 1979. The name was changed to C++ in 1983, with the '++' being from the C increment operator. 'C' and 'C+' were different languages/proposals, not earlier names of C++.

The CPU consists of three primary components: the Control Unit (CU) that manages instruction flow, the Arithmetic Logic Unit (ALU) that performs mathematical and logical operations, and registers that store temporary data. RAM and ROM are separate memory units that work alongside the CPU but are not part of its internal architecture.

Pipelining is a fundamental CPU architecture technique where multiple instruction phases are overlapped to improve performance. While one instruction is being executed, another can be decoded and a third fetched - similar to an assembly line. Drilling, refining, and blasting are industrial processes unrelated to computing.

1 gram weight equals approximately 981 dynes because 1 dyne = 10^-5 newtons and 1 gram weight = g × 10^-3 newtons where g ≈ 9.81 m/s². This gives us 981 dynes. The other values (903, 376, 257) don't match this conversion.

The MKS (meter-kilogram-second) system uses the Joule as the unit of energy. Joule = kg × m²/s² in MKS units. Volt is for electric potential, Erg is the CGS unit of energy, and Ohm is for electrical resistance.

C.V. Raman (Chandrasekhara Venkata Raman) won the Nobel Prize in Physics in 1930 for his discovery of the Raman Effect - the scattering of light by molecules. J.C. Bose was a renowned scientist but did not win a Nobel Prize, Amartya Sen won the Nobel in Economics (1998), and G.D. Naidu was an inventor but not a Nobel laureate.

The golden ratio (phi, approximately 1.618) is defined by the relationship (a+b)/a = a/b where a is the larger segment and a+b is the total length. This means the ratio of the sum to the larger part equals the ratio of the larger to the smaller part. Option D correctly expresses this mathematical relationship.

The Great Pyramid of Giza has an inclination angle of approximately 51 degrees and 51 minutes. This precise angle was carefully calculated by ancient Egyptian architects to achieve structural stability and visual harmony. The slope represents the ratio of height to base length.