Space and Human Body Facts

False. Most video cards draw sufficient power from the PCIe slot, which provides up to 75W. External power connectors (6-pin or 8-pin) are only required for high-end GPUs that exceed this power budget.

512 MB was the recommended RAM for Windows XP. While the minimum requirement was 64 MB (128 MB for some features), 256 MB was considered practical minimum for smooth operation, and 512 MB provided optimal performance for most applications and multitasking.

The claimed correct answer is B (0.01715 inches), which represents average daily hair growth. Hair typically grows about 0.3-0.4 mm per day, and 0.01715 inches ≈ 0.435 mm falls within this normal range. The other options are very close in value, making this a precise numerical distinction.

The correct answer is D (2.9 pounds), representing total water intake in 24 hours including all liquids. An average adult should consume about 2.5-3.5 liters of water daily; 2.9 pounds ≈ 1.3 kg ≈ 1.3 liters, which is reasonable for total daily fluid intake. Options A (1.9 lbs) and C (1.7 lbs) are too low, while B (2.5 lbs) is slightly below typical recommendations.

The correct answer is C (3.25 pounds), representing average daily food intake. An adult typically consumes 3-4 pounds of food and beverages per day; 3.25 pounds falls within this normal range. Options A (3.35 lbs) and B (3.15 lbs) are close but incorrect values, while D (3.05 lbs) is slightly below typical intake.

The correct answer is A (438 cubic feet), representing air breathed in 24 hours. At rest, humans breathe about 6-7 liters per minute; over 24 hours, this totals approximately 8,500-10,000 liters or 300-350 cubic feet. 438 cubic feet is plausible for an active day. Options B (435), C (436), and D (448) are very close values making this a precise numerical distinction.

The correct answer is B (1.43 pints), representing daily sweat production. Normal sweat production varies widely with activity and climate; baseline insensible perspiration is about 0.5-1 liter daily. 1.43 pints ≈ 0.68 liters, which is a reasonable baseline value. Options A (1.40), C (1.45), and D (1.49) are very close, making this a precise numerical distinction.

The correct answer is D (4,800 words), representing daily speech output. Average daily speech varies greatly by occupation and personality; typical estimates range 3,000-7,000 words. 4,800 falls within this reasonable range. Options A (4,500), B (4,700), and C (4,200) are plausible but represent different claimed values.

The correct answer is A (25.4 times), representing body movements during sleep. Average sleepers change position 40-60 times per night. 25.4 is somewhat low but plausible for very deep sleep or specific measurement criteria. Options B (25.7), C (25.1), and D (25.5) are very close, making this another precise numerical distinction.

The Andromeda Galaxy is approximately 2.54 million light-years from Earth. This is the closest major galaxy to the Milky Way and is on a collision course with our galaxy, expected to merge in about 4.5 billion years.

Neptune is the coldest planet in our solar system after Pluto's reclassification in 2006. With an average temperature of -214°C, Neptune is colder than Uranus despite being farther from the Sun. Uranus has a colder recorded minimum (-224°C) but Neptune's average temperature makes it the consistently coldest planet.

Halley's Comet was last seen in 1986, not 1987. It makes predictable appearances every 75-76 years, and its most recent perihelion (closest approach to Sun) was in February 1986. The next appearance is expected in 2061. Therefore the statement is false.