Temperature and its Measurement — Quiz

Q1. In Activity 7.1, container A holds warm water, container B holds tap water and container C holds ice-cold water. The activity is conducted in two parts. The first part is

• A. Observation only
• B. Prediction, then observation
• C. Measurement, then calculation
• D. Recording, then graphing

Q2. Asha first dips her right hand in warm water and her left hand in ice-cold water for one minute. She then places both hands in container B with tap water. What is she most likely to feel?

• A. Both hands feel that container B is at the same temperature
• B. Both hands feel that B is warmer than A
• C. Both hands feel that B is colder than C
• D. Right hand feels B is cool while left hand feels B is warm

Q3. Before using a digital clinical thermometer to measure her own temperature, Priya should

• A. Wash her hands and the tip of the thermometer with soap and water
• B. Wipe the display with a wet cloth
• C. Hold the thermometer by its tip and switch it on
• D. Heat the tip with a candle to prepare it

Q4. When a digital thermometer is placed in the armpit (instead of under the tongue), the reading is generally

• A. About 0.5 to 1 degrees C lower than the actual body temperature
• B. About 0.5 to 1 degrees C higher than the actual body temperature
• C. Exactly equal to the actual body temperature
• D. About 5 degrees C lower than the actual body temperature

Q5. Ravi measures the body temperatures of ten classmates and gets values like 36.8, 37.1 and 36.9 degrees C. Why is the 'normal' temperature still taken to be 37.0 degrees C?

• A. Ten readings are too few to test the value
• B. Normal temperature is the average body temperature of a large number of healthy people, so individual values may differ slightly
• C. All the thermometers in the activity were faulty
• D. 37.0 degrees C is only seen during fever

Q6. Between the marks 10 degrees C and 20 degrees C of a laboratory thermometer there are 10 small divisions. The smallest value that this thermometer can read is

• A. 0.1 degrees C
• B. 0.5 degrees C
• C. 1 degrees C
• D. 10 degrees C

Q7. While measuring the temperature of warm water with a laboratory thermometer, the bulb of the thermometer

• A. Should rest on the bottom of the beaker
• B. Should touch the side wall of the beaker
• C. Should not touch the bottom or the sides of the beaker
• D. Should be lifted just above the water surface

Q8. While reading a laboratory thermometer, the eye of the reader should be

• A. Above the top of the liquid column
• B. Below the top of the liquid column
• C. Directly in line with the level of the liquid column
• D. Anywhere around the thermometer

Q9. On the Fahrenheit scale, the unit of temperature is degree Fahrenheit and is denoted by

• A. degrees F
• B. degrees C
• C. K
• D. Fa

Q10. Asha wants to convert 27 degrees C into the Kelvin scale. Using the formula given in the chapter, the temperature in kelvin is

• A. 246.15 K
• B. 273.15 K
• C. 300.15 K
• D. 327.15 K

Q11. Which of the following is the correct way to write a temperature on the Kelvin scale?

• A. 300 degrees K
• B. 300 degrees k
• C. 300 c K
• D. 300 K

Q12. Thermometers hung on the walls of a school laboratory, a doctor's clinic or a hospital give us an approximate idea of

• A. Body temperature of patients
• B. Boiling temperature of water in that room
• C. Temperature inside a refrigerator
• D. Room (air) temperature

Q13. Weather reports in newspapers, TV news and the internet usually mention the maximum and minimum air temperature of the day. As the summer season approaches in India, the air temperature generally

• A. Falls steadily through the day
• B. Stays exactly the same as in winter
• C. Rises
• D. Becomes negative in most places

Q14. The chapter opens with Anna Mani's words: 'Wrong measurements are worse than no measurements at all.' For a Class 6 teacher, this quote best supports the message that

• A. Measurements should be avoided in science class
• B. Reading and using a measuring instrument correctly is as important as taking the measurement
• C. Only digital instruments should be used by students
• D. Older instruments are always more accurate than newer ones

Q15. A teacher in Rampur wants her students to measure the temperature of ice in a beaker. Which of these thermometers is suitable for the job?

• A. A clinical thermometer with a range 35 degrees C to 42 degrees C
• B. A laboratory thermometer with a range -10 degrees C to 110 degrees C
• C. A digital clinical thermometer
• D. An infrared (non-contact) thermometer