Higher or Lower

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1. 1. Lake Michigan covers about 57,800 km². Is Lake Huron's surface area higher or lower?
   • A. Higher (answer)
   • B. Lower
   Lake Huron covers about 59,600 km², compared with Michigan's 57,800 km².
2. 2. Louisiana cost US$15 million in 1803. Was Alaska's agreed price in 1867 higher or lower, using nominal US dollars without inflation adjustment?
   • A. Higher
   • B. Lower (answer)
   Alaska's price was US$7.2 million in 1867, compared with US$15 million for Louisiana in 1803. These are nominal historical sums.
3. 3. A tennis court is 23.77 metres long. Is an adult cricket pitch's length higher or lower?
   • A. Higher
   • B. Lower (answer)
   A cricket pitch is 22 yards, about 20.12 metres, shorter than the 23.77-metre tennis court.
4. 4. Mercury is about 4,880 km across. Is Saturn's moon Titan's diameter higher or lower?
   • A. Higher (answer)
   • B. Lower
   Titan is about 5,150 km across. A moon can be wider than a planet.
5. 5. Compared with 500 megabits per second, is USB 2.0 Hi-Speed's specified maximum signalling rate higher or lower?
   • A. Higher
   • B. Lower (answer)
   USB 2.0 Hi-Speed specifies 480 megabits per second. Real file transfers are slower still.
6. 6. The Washington Monument is about 555 feet tall. Is Seattle's Space Needle's total height higher or lower?
   • A. Higher (answer)
   • B. Lower
   The Space Needle is 605 feet tall. The Washington Monument is about 555.43 feet.
7. 7. Lake Huron's maximum depth is about 229 metres. Is Lake Michigan's maximum depth higher or lower?
   • A. Higher (answer)
   • B. Lower
   EPA low-water figures give Lake Michigan 282 metres and Lake Huron 229 metres.
8. 8. Uranus takes about 84 Earth years to orbit the Sun. Is Neptune's orbital period higher or lower than twice that, 168 years?
   • A. Higher
   • B. Lower (answer)
   Neptune takes about 165 Earth years, slightly less than twice Uranus's approximately 84-year orbit.
9. 9. Pure copper melts at about 1,085°C. Is pure silver's melting point higher or lower?
   • A. Higher
   • B. Lower (answer)
   Silver melts at 961.78°C, compared with copper at 1084.62°C, according to the RSC.
10. 10. Pure titanium melts at about 1,668°C. Is pure chromium's melting point higher or lower?
    • A. Higher (answer)
    • B. Lower
    Chromium melts at 1907°C, compared with titanium at 1668°C, according to the RSC.
11. 11. Pure silver's room-temperature density is about 10.5 g/cm³. Is pure lead's higher or lower?
    • A. Higher (answer)
    • B. Lower
    The RSC lists lead at 11.3 g/cm³ and silver at 10.5 g/cm³.
12. 12. Cobalt's relative atomic mass is about 58.933. Is nickel's higher or lower?
    • A. Higher
    • B. Lower (answer)
    Nickel's relative atomic mass is 58.693. Atomic mass does not increase at every step in atomic number.