Liquid-in-glass thermometers work by using the expansion and contraction of a liquid, like mercury or alcohol, inside a glass tube. The liquid’s level rises or falls as temperature changes.
Tiwari Academy Discussion Latest Questions
Absolute zero is the lowest possible temperature, 0 Kelvin or -273.15°C, where molecular motion theoretically ceases entirely. It is a fundamental concept in thermodynamics.
The Kelvin scale is an absolute temperature scale starting at absolute zero (0 K). It is commonly used in scientific research and calculations.
No, a cricket ball cannot be used to play tennis because it is too hard, heavy and lacks the required bounce. Tennis balls are lighter, softer and specifically designed to suit the game’s dynamics.
Different materials are used for making sports balls to suit the specific needs of each game, such as durability, bounce, weight, and grip. These factors influence the ball’s performance and player control in different environments.
No, not all lustrous materials are metals. While metals like gold and silver are lustrous, non-metals like diamonds and certain minerals also exhibit luster. Luster is not exclusive to metals but depends on surface properties.
Liquids like vinegar dissolve in water because they are polar. However, oil does not dissolve due to its non-polar nature. Honey partially dissolves in water as it contains both water-soluble sugars and other substances.
Yes, air is matter because it has mass and occupies space. It consists of gases like nitrogen, oxygen, and carbon dioxide. Though invisible, its presence is evident through activities like inflating a balloon or wind movement.
The invention of plastic revolutionized daily life by offering versatile, durable, and affordable materials. However, it also introduced environmental challenges, such as pollution and non-biodegradability, making it both a boon and a bane for humanity.
For food waste, use plastic containers for durability and ease of cleaning. For broken glass, use sturdy, puncture-resistant containers to avoid accidents. For wastepaper, use paper or cardboard bins for easy recycling.