Frozen Expansion Multiple Choices

This passage explores the phenomenon of water expanding when it freezes and why ice floats on water. It explains that as water cools, the molecules arrange themselves into a crystalline structure that occupies more space than liquid water. Hydrogen bonds between water molecules play a key role in this expansion, making ice less dense than water. The passage also touches on how this property of water affects natural environments like lakes and ponds.

Students are introduced to specialized vocabulary such as “crystalline structure” and “density,” enriching their scientific language skills. The passage encourages comprehension by requiring students to understand how water’s expansion upon freezing has real-life environmental impacts. Critical thinking is promoted as students analyze the relationship between molecular structure and physical properties. The clear, logical format helps students improve their grammar awareness through well-organized scientific explanations.