1. What happens when it rains? Why? 2. What happens when you heat the water? Why? 3. What happens when it is dark? 4. What happens when you put the water in the freezer? 5. What happens when you heat the water?
Answer (1)
When it rains, water droplets fall from the sky as precipitation. This happens because of the water cycle. Water evaporates from the Earth's surface into the air, condenses to form clouds, and when the clouds get heavy enough, the water falls back to the ground as rain. This cycle is driven by the sun's energy and gravity.
When you heat water, the energy from the heat causes water molecules to move faster. This increase in energy can eventually lead to the water boiling and turning into steam (a gas). This process is called evaporation and is an example of a change in state from liquid to gas due to increased temperature.
When it is dark, it typically means that the sun has set, signaling nighttime. This occurs because the Earth rotates on its axis, causing different parts of the planet to face away from the sun at different times. In darkness, many organisms rest or become less active, relying on natural rhythms called circadian rhythms.
When you put water in the freezer, the temperature of the water decreases. As the temperature drops below 0°C (32°F), water molecules slow down and become fixed in a crystalline form, creating ice. This process is called freezing, which changes the state of matter from liquid to solid.
Referencing question 2, when you heat water, the energy from the heat causes the water molecules to move faster, potentially leading to a change in the state of the water if heated sufficiently, as it can boil and become steam at 100°C (212°F) under normal atmospheric pressure.
