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Introduction to Temperature Video Lecture | Science Class 7

145 videos|326 docs|55 tests

FAQs on Introduction to Temperature Video Lecture - Science Class 7

1. What is temperature?
Ans. Temperature is a measure of how hot or cold an object is. It is a physical quantity that expresses the degree of hotness or coldness of an object.
2. What is the difference between heat and temperature?
Ans. Heat and temperature are related but different concepts. Heat is the energy transferred between two objects due to a temperature difference. Temperature is a measure of the average kinetic energy of the particles in an object.
3. What are the different units of measuring temperature?
Ans. The most commonly used units for measuring temperature are Celsius, Fahrenheit, and Kelvin. Celsius and Fahrenheit are used in everyday life, whereas Kelvin is used in scientific applications.
4. How is temperature measured?
Ans. Temperature can be measured using a thermometer, which is a device that measures temperature. There are different types of thermometers such as mercury, alcohol, and digital thermometers.
5. What are the effects of temperature on matter?
Ans. Temperature affects matter in various ways. It can cause matter to expand or contract, change its state from solid to liquid to gas, and affect its chemical properties. For example, increasing the temperature of a gas will cause its molecules to move faster and spread apart, leading to an increase in volume.
145 videos|326 docs|55 tests

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