You can change the state of water by adjusting temperature and pressure. Heating water turns it into steam (gas), while cooling it forms ice (solid). Reducing pressure can also facilitate evaporation and freezing.
Discussion Forum Latest Questions
Oxygen and carbon dioxide are crucial gases for life. Oxygen is essential for respiration in living organisms, while carbon dioxide is a byproduct of respiration and is used by plants during photosynthesis for growth.
Blowing air over a wet hand cools it more because evaporation of water absorbs heat, while the dry hand doesn’t benefit from this process. Evaporation requires heat, which cools the wet surface.
To cool the hot seat, place a damp cloth over it or spray water lightly. The evaporation of water will absorb heat and lower the temperature of the seat, making it cooler to touch.
The statement emphasizes that while access to water is a fundamental right, we must first be responsible for its conservation and proper use. Protecting water resources ensures their availability for everyone, now and in the future.