Tag: science & technology

The Arctic Ocean is the smallest and shallowest of the world's five oceans, covering approximately 6% of Earth's surface area. Located around the North Pole, it's mostly ice-covered and is bounded by North America, Europe, and Asia. The Atlantic is significantly larger.

Gold has the highest density (19.3 g/cm³) among these metals, making it the heaviest by volume. Silver has a density of 10.5 g/cm³, copper is 8.96 g/cm³, and 'alloy' refers to a mixture of metals rather than a pure metal. Gold's high density is why gold jewelry feels significantly heavier than it appears.

Butterflies are insects, and all insects have six legs by definition. Their legs are attached to the thorax (middle body segment) and are used for perching, tasting food through chemoreceptors, and in some species, grasping mates during courtship. The six-legged characteristic distinguishes insects from other arthropods.

Blue whales are the largest animals known to have ever lived, reaching up to 30 meters in length and weighing up to 200 tons. They're marine mammals, not fish. Elephants are the largest land mammals but are tiny compared to blue whales. Crocodiles aren't mammals at all - they're reptiles.

The 2008 Summer Olympics were hosted by Beijing, China. These games were notable for their spectacular opening ceremony and massive infrastructure investment. They marked China's emergence as a global sporting powerhouse, as China topped the medal table for the first time. Japan (1964) is the only other Asian nation to have hosted Summer Olympics at that point.

Basketball is America's most popular indoor sport, played professionally (NBA), collegiately (NCAA), and in recreational settings across the country. Unlike baseball and American football, which are primarily outdoor sports, basketball thrives in indoor gyms and arenas year-round. It has deep cultural roots in American cities and schools.

Rhino horns are composed of keratin, the same fibrous protein that makes up human hair and fingernails. Unlike antlers (which are bone), rhino horns have no bony core - they're solid masses of keratin fibers fused together. This is why rhino horns can be trimmed without pain, similar to cutting hair. 'Tusk' refers to elephant ivory (tooth material), not horn material.

Chandrayaan-I was India's first lunar satellite mission, launched in 2008. The other options - Aryabhatta, Rohini, and Bhaskar - were all Earth-orbiting satellites launched earlier. Chandrayaan-I successfully orbited the Moon and discovered water molecules on the lunar surface.

Lee Myung-bak, the President of South Korea, was the chief guest at India's Republic Day parade in 2010. This was part of India's diplomatic outreach to important partner nations. Republic Day chief guests are always visiting heads of state or government.