Wacky WorldScience
Most substances shrink when they solidify, but water molecules lock into an open hexagonal crystal as ice. That is why ice floats, pipes burst in winter and lakes freeze from the top down, protecting the life below.
Wacky WorldScience
Most substances shrink when they solidify, but water molecules lock into an open hexagonal crystal as ice. That is why ice floats, pipes burst in winter and lakes freeze from the top down, protecting the life below.