General Knowledge Challenge

Mars

Mars appears red because its surface contains iron oxide (rust). The ancient Romans named it after their god of war due to its blood-red color.

Skin

The skin of an average adult covers about 20 square feet and accounts for about 15% of their body weight.

Pacific Ocean

The Pacific Ocean covers more than 30% of Earth's surface and contains more water than all the world's continents combined.

Au

The symbol Au comes from the Latin word for gold, 'aurum', which means 'shining dawn.'

Greenland Shark

Greenland sharks can live for up to 500 years, making them the longest-living known vertebrate.

71%

Despite covering 71% of Earth's surface, oceans only represent about 0.02% of Earth's total mass.

Vitamin D

Vitamin D is actually a hormone rather than a vitamin, and it's crucial for bone health and immune system function.

Diamond

Diamonds are made of pure carbon and form under extreme pressure at depths of 150km below Earth's surface.

China

The Chinese created the first ice cream-like food in 3000 BC by mixing milk, rice and snow.

Cheetah

Cheetahs can accelerate from 0 to 60 mph in just three seconds - faster than most sports cars.

Nitrogen

Nitrogen makes up about 78% of Earth's atmosphere and is essential for plant growth and protein formation.

Stapes

The stapes bone in the middle ear is only 3mm long and plays a crucial role in conducting sound vibrations.

Africa

Africa has 54 internationally recognized sovereign states, making it the continent with the most independent countries.

100%

The myth that we only use 10% of our brains is false. Brain scans show that we use virtually all of our brain, even when sleeping.

Three

An octopus has one main heart that pumps blood through its body and two additional hearts that pump blood through each of its gills.