Question

Long Answer Type Questions


1. Write a note on clinical thermometer.

ans

2. Describe sea breeze and land breeze,

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3. Write four differences between heat and temperature.

ans

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class 7​

Answer 1

Answer:

1. A clinical thermometer is a thermometer used to measure human body temperature. Most made in the 20th century are mercury-in-glass thermometers. They are accurate and sensitive, having a narrow place where the mercury level rises very fast. A kink in the tube stops the mercury level from falling on it own.

2. A sea breeze describes a wind that blows from the ocean inland towards land. ... However, water heats up much more slowly than land and so the air above the land will be warmer compared to the air over the ocean. The warm air over the land will rise throughout the day, causing low pressure at the surface.

Land breeze, a local wind system characterized by a flow from land to water late at night. Land breezes alternate with sea breezes along coastlines adjacent to large bodies of water. ... Since the surface flow of the land breeze terminates over water, a region of low-level air convergence is produced.

3. Heat describes the transfer of thermal energy between molecules within a system and is measured in Joules.[2] Heat measures how energy moves or flows. An object can gain heat or lose heat, but it cannot have heat. Heat is a measure of change, never a property possessed by an object or system. Therefore, it is classified as a process variable.

Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius (°C), Kelvin(K), Fahrenheit (°F), or Rankine (R). It is a measurable physical property of an object—also known as a state variable. Other measurable physical properties include velocity, mass, and density, to name a few.

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Answer 2

Answer:

1. clinical thermometer is a thermometer used to measure human body temperature. Most made in the 20th century are mercury-in-glass thermometers. They are accurate and sensitive, having a narrow place where the mercury level rises very fast. A kink in the tube stops the mercury level from falling on it own.

2.A land breeze is created when the land is cooler than the water such as at night and the surface winds have to be very light. A sea breeze is created when the surface of the land is heated sufficiently to start air rising. ...

3.The basic difference between heat and temperature is that Heat is the form of energy that transfers from hot body to cold body. Its unit is the joule. While the temperature is the degree of hotness and coldness of the body.

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