Worksheet: Measuring Temperatures

In this worksheet, we will practice identifying correct and incorrect uses of thermometers for measuring the temperatures of liquids and gases.

Q1:

Which of the following instruments is used to measure temperature?

  • AAn ohmmeter
  • BA measuring cylinder
  • CA weighing scale
  • DA thermometer
  • EA light gate

Q2:

Charlotte heats water in a copper container using a Bunsen burner, as shown in the diagram. She wants to measure the temperature of the water. She puts a thermometer in the container so that it is in contact with the side of the container. This leads to a higher temperature reading on the thermometer than the actual temperature of the water. Which of the following statements best explains the reason for this?

  • ACopper conducts heat well, and the heat from the Bunsen burner is conducted through the copper of the container. Since the thermometer is in contact with the copper of the container, it is partially measuring the temperature of the container rather than the water.
  • BThe water at the sides of the container is hotter than the water in the middle because it is in direct contact with the hot container. The average temperature of the water is lower.
  • CConvection currents in the water travel up the sides of the container; thus, the water at the sides of the container is hotter than the water in the middle. The average temperature of the water is lower.

Q3:

Olivia wants to measure the temperature of some water in a beaker that is near to its boiling point. She holds the thermometer above the surface of the water, as shown in the diagram, and holds it there until the reading has stabilized. She determines that the temperature of the water is 77. Which of the following statements explains why this answer is incorrect?

  • AThe thermometer must be fully submerged in the water in order to measure the temperature of the water. The temperature of the water is higher than 77.
  • BThe bulb of the thermometer must be submerged in the water in order to measure the temperature of the water. The temperature of the water is higher than 77.
  • CThe reading must be taken as soon as the thermometer is above the water rather than several minutes later.

Q4:

The diagram shows a thermometer being used to measure the temperature of the air outside. What value does the thermometer give for the temperature?

Q5:

Sophia wants to measure the temperature of some water that has been heated to near its boiling point. She uses a thermometer that has been on a table in the room for an hour. She places the bulb of the thermometer in the water and immediately reads the temperature on it, as shown in the diagram. She determines that the temperature of the water is 19C. Which of the following statements explains why this answer is incorrect?

  • AShe should submerge the whole thermometer in the water.
  • BShe should hold the bulb of the thermometer just above the surface of the water. This is where the temperature is highest.
  • CShe did not wait for the reading to stabilize. The temperature of the water is actually far higher than 19C.

Q6:

The diagram shows three different angles at which the temperature shown on a thermometer could be read. From which angle is it best to read the thermometer to get an accurate reading?

  • A(C)
  • B(B)
  • C(A)

Q7:

A thermometer is placed in a pan containing a mixture of fruit juice and sugar that is being heated to be turned into jam. The mixture is heated to over 100C. The thermometer is in the figure shown. What temperature reading does the thermometer give?

  • A105C
  • B110C
  • C104C
  • D100C
  • EIt is not possible to get an accurate reading from the thermometer.

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