Thermometry and Temperature Scales

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Questions and Answers

What is the absolute zero in Celsius?

-272.10 oC

-273.10 oC

-273.15 oC (correct)

-272.15 oC

What happens to the temperature of a substance when heat energy flows into it?

It usually rises (correct)

It remains constant

It decreases

It depends on the type of substance

What is the main difference between the Kelvin and Celsius scales?

The Kelvin scale is used for lower temperatures.

The Kelvin scale has its zero point at absolute zero. (correct)

The Kelvin scale has a different division.

The Kelvin scale is used for higher temperatures.

What is the relationship between the average kinetic energy and temperature of an ideal gas, liquids, and solids?

The average kinetic energy is directly proportional to temperature Signup and view all the answers

Why is temperature difficult to measure directly?

Because it's a complex physical property Signup and view all the answers

What is the relationship between the Kelvin and Celsius scales?

They have the same division but different zero points. Signup and view all the answers

What is the Fahrenheit formula to convert Celsius to Fahrenheit?

tF = tc + 32 Signup and view all the answers

What physical property of a substance changes with temperature?

Electrical resistance Signup and view all the answers

Which of the following is NOT a method of measuring temperature indirectly?

Measuring mass Signup and view all the answers

Why is the Kelvin scale considered an absolute temperature scale?

Because it has its zero point at absolute zero. Signup and view all the answers

What is the scientific term for the study of producing and using very low temperatures?

Cryogenics Signup and view all the answers

What is the field of study that deals with the effects of low temperatures on biological systems and medicine?

Cryobiology Signup and view all the answers

What is the primary area of focus in Cryogenics?

Production and application of very low temperatures Signup and view all the answers

Which of the following is NOT related to the study of low temperatures?

Materials Science Signup and view all the answers

What is the term used to describe the science and technology of producing and using very low temperatures?

Cryogenics Signup and view all the answers

What is the primary material used in making a thermometer?

Glass Signup and view all the answers

What is the common substance used to measure temperature in a glass thermometer?

Mercury or alcohol Signup and view all the answers

What is the purpose of a thermometer?

To measure temperature Signup and view all the answers

What type of thermometer is commonly used to measure temperature?

Glass thermometer Signup and view all the answers

What is the common feature of a glass thermometer?

It contains a liquid substance Signup and view all the answers

What is the term used to describe the application of cryogenic methods to destroy cells?

Cryosurgery Signup and view all the answers

What is one of the advantages of cryosurgery?

There is little bleeding in the destroyed area Signup and view all the answers

How can the volume of tissue destroyed be controlled during cryosurgery?

By the temperature of the cryosurgical probe Signup and view all the answers

What is the main purpose of cryosurgery?

To destroy abnormal or damaged cells Signup and view all the answers

Who is the lecturer responsible for teaching about cryosurgery?

Falhi.A.Ali Signup and view all the answers

Study Notes

Temperature and Heat Energy

When heat energy flows into a substance, the temperature of the substance usually rises.
The average kinetic energy (K.E.) of a substance is directly proportional to its temperature (in ideal gases, liquids, and solids).

Thermometry and Temperature Scales

Temperature is difficult to measure directly, so it's usually measured indirectly by measuring physical properties that change with temperature.
Examples of physical properties that change with temperature include:
- Volume (density) of most substances, which increases with temperature.
- Electrical resistance.
- Color.
- Emission of infrared radiation.
The Fahrenheit scale (°F) is related to the Celsius scale (°C) by the equation: tF = tc + 32.

The Kelvin Scale

The Kelvin scale (°K) is also known as the absolute scale.
The Kelvin scale has the same divisions as the Celsius scale, but takes 0 °K as absolute zero, which is equivalent to -273.15 °C.

Measuring Temperature

The most common way to measure temperature is using a glass thermometer containing mercury or alcohol.
The glass thermometer is a common device used to measure temperature.

Cryogenics and Cryosurgery

Cryogenics is the science and technology of producing and using very low temperatures.
Cryobiology is the study of low-temperature effects in biology and medicine.
Cryosurgery is the application of cryogenic methods to destroy cells, and is used to destroy tissue in a controlled manner.
Advantages of cryosurgery include:
- Minimal bleeding in the destroyed area.
- The ability to control the volume of tissue destroyed by the temperature of the cryosurgical probe.

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Description

This quiz covers the relationship between heat energy and temperature, thermometry, and temperature scales. It explores how temperature affects the physical properties of substances, such as ideal gases, liquids, and solids.