Freezing is the process in which a liquid turns into a solid when it loses heat. During freezing, the particles in the liquid slow down and move closer together, forming a solid structure. For example, water freezes at 0°C (32°F) ...
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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Water forms droplets on the outside of a cold glass because of condensation. When a cold glass is exposed to warm air, the moisture in the air cools down when it touches the glass. As the air cools, the water ...
Melting is the process in which a solid changes into a liquid when it is heated. When a substance like ice is heated, its particles gain energy and start moving faster, causing the solid to lose its shape and become ...
It is important to leave a space between the temperature number and the unit to ensure clarity and avoid confusion. For example, instead of writing 25°C without a space, it should be written as 25 °C. This helps in distinguishing ...
The boiling point of water at sea level is 100°C (212°F). This is the temperature at which water changes from a liquid to a gas, or vapor. At sea level, the atmospheric pressure is standard, which allows water to boil ...
The bulb of a thermometer should be completely immersed in the liquid to measure its temperature accurately. It should be placed in such a way that the bulb is fully surrounded by the liquid, ensuring that the temperature of the ...
Room temperature refers to the temperature of the environment in a typical indoor setting, where people feel comfortable. It is usually around 20°C to 25°C (68°F to 77°F). This temperature is neither too hot nor too cold and is considered ...
To convert Celsius (°C) to Kelvin (K), you simply add 273 to the Celsius temperature. The formula is: Kelvin (K) = Celsius (°C) + 273 For example, if the temperature is 25°C, the conversion to Kelvin would be: 25°C + ...
The liquid commonly used in laboratory thermometers is mercury. Mercury expands and contracts evenly with temperature changes, making it ideal for accurate measurements. It is visible in the thermometer because it is a shiny, silver liquid that moves along the ...
After using a thermometer, it should be cleaned carefully to ensure it remains hygienic and accurate. First, wipe the thermometer with a soft cloth or tissue to remove any moisture. Then, use a disinfectant or a mild soap solution to ...