Water's Properties and Earth's Systems
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Objective
I can relate water's unique properties to its role in Earth's systems.
Part 1 of 4
Warm-up video
CrashCourse · 11:17Vetted channel
We don't generate video — this one is by CrashCourse on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Water molecules are polar, with a slightly negative charge on the oxygen atom and slightly positive charges on the hydrogen atoms, leading to hydrogen bonds between water molecules.
- 2
Water's high cohesion due to hydrogen bonds results in high surface tension, allowing some insects to walk on water, while adhesion describes water's attraction to other substances like glass.
- 3
Water is an amazing solvent because its polarity allows it to dissolve more substances than any other liquid, and substances that dissolve in water are called hydrophilic, while those that don't are called hydrophobic.
Part 3 of 4
Practice
3 questions
Explain how water's polarity contributes to its ability to dissolve a wide range of substances.
If ice were denser than liquid water, how would aquatic ecosystems be affected?
Part 4 of 4
Exit ticket
Quick comprehension check
“Explain how water's high heat capacity impacts Earth's climate, and provide a specific example from the video.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
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