Questions amidst the waves
- What are the distinguishing features of water? Distinguish the chemical from the physical ones.
- What elements is water made up of?
- What is distilled water? What is its pH? What does it mean that water is a universal solvent?
- How much water is our organism composed of? What is the percentage of water the other organisms are composed of?
- Why is the surface tension of water important for living organisms?
- What are the physical states in which water can be found in nature, depending on temperature?
- What is the boiling point of water?
- Why is it dangerous to leave a glass bottle full of water in the freezer?
- Describe the most important stages of the hydrological cycle.
- What does the hydrological balance measure?
- What is the daily water consumption per person? What are the possible uses of water?
- How was the hydrosphere generated? In what forms is water available on the Earth’s surface?
- What are tributaries and effluents?
- What makes a glacier move?
- Why do tides change?
- What is the ice pack?
- How many and which are the oceans?
- How are waters purified?
- What can water pollution be caused by?
- What can be the effects of water pollution?
- What does it mean that water has self-purifying properties and what does self-purification depend on?
- What is phytopurification?
