Answer:
Falsifiable: Magma leaks up from the mantle below Earth's surface and spreads out, forming a new ocean floor, thereby causing land forms above to move;
Falsifiable: The Great Salt Lake is salty due to a high rate of water evaporation in the desert climate;
Falsifiable: Magma erupting from the mantle below Earth's surface is hot and fluid in nature;
Non-Falsifiable: Floating in the Great Salt Lake in Utah is a lot of fun;