Exploring Heat Energy Concepts

What is the definition of temperature?

• Temperature is a measure of the average kinetic energy of particles.

• Temperature is the measure of how much space an object occupies.

• Temperature is the total energy of all particles in a substance.

• Temperature is the measure of an object's mass.

What are the main types of thermometers used in measuring temperature?

• mercury-in-glass

• gas thermometer

• thermocouple

• Liquid-in-glass, digital, infrared, bimetallic strip

Describe the working principle of a liquid-in-glass thermometer.

• It measures temperature by the vibration of a metal rod.

• It uses a digital display to show temperature readings.

• It relies on the pressure of gas in a sealed container.

• A liquid-in-glass thermometer measures temperature by the expansion and contraction of a liquid in a glass tube.

How does a constant volume gas thermometer operate?

• It uses a liquid to measure temperature changes instead of gas.

• A constant volume gas thermometer measures temperature by observing pressure changes in a gas kept at constant volume.

• It operates by heating a gas to increase its volume.

• It measures temperature by observing volume changes in a gas.

What is the function of a resistance thermometer?

• To measure temperature based on the change in electrical resistance.

• To calculate electrical resistance in circuits.

• To measure pressure based on fluid dynamics.

• To determine humidity levels in the air.

Explain how temperature is measured using a liquid-in-glass thermometer.

• Temperature is measured by the color of the liquid in the thermometer.

• Temperature is indicated by the sound produced when the thermometer is shaken.

• Temperature is measured by observing the height of the liquid column in the glass tube of the thermometer.

• Temperature is determined by the pressure of the liquid in the glass tube.

What are the advantages of using a gas thermometer over a liquid-in-glass thermometer?

• Gas thermometers require more maintenance than liquid-in-glass thermometers.

• Gas thermometers are more fragile than liquid-in-glass thermometers.

• Gas thermometers are less accurate at room temperature.

• Gas thermometers can measure a wider temperature range, provide more accurate readings at extremes, and are less affected by atmospheric pressure.

How does a thermocouple measure temperature?

• A thermocouple measures temperature by using a liquid that expands with heat.

• A thermocouple measures temperature by detecting infrared radiation.

• A thermocouple measures temperature by changing its color based on heat.

• A thermocouple measures temperature by generating a voltage based on the temperature difference between two junctions of different metals.

What materials are commonly used in resistance thermometers?

• Carbon, glass, rubber

• Gold, silver, tin

• Aluminum, iron, lead

• Platinum, nickel, copper

What is the significance of the thermal expansion of liquids in a liquid-in-glass thermometer?

• The thermal expansion of liquids allows for accurate temperature measurement by enabling the liquid to rise or fall in response to temperature changes.

• The thermal expansion of liquids causes them to freeze at lower temperatures.

• Thermal expansion of liquids is irrelevant to temperature measurement.

• Liquid expansion leads to inaccurate readings in thermometers.