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1. When measured from base to peak, Mauna Kea is taller than Mount Everest
2. The moon is wider than Australia
3. Greenland is Earth's biggest island
4. Russia is the only Trans-Continental Country
5. Sumatra is Indonesia's biggest island (completely within)
6. Hawaii is part of North America
The only state not to be part of North America
7. The US and Russia are less than 3 miles apart
Alaska
8. Antarctica is the only place penguins live
Penguins live all over the Southern hemisphere and even in the Galapagos Islands in Ecuador
9. New Zealand is part of the continent Australia
New Zealand is part of Oceania and not part of a continent
10. The biggest island of Hawaii is Maui
5. New Guinea is the largest island part of Indonesia, unless you want to specify that the island must be fully within Indonesia.
6. Hawaii is technically part of Polynesia, yes, but is also part of the United States in North America. A bit confusing.
9. Overall confusing, since the region isn't heavily defined by name.
10. Wrong, the largest island is Hawai'i, literally called the Big Island.
6 It is still not part of North America
9 This is medium not easy
10 fixed it minutes ago