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Grade 7 Online Video Lessons on Measurement: Temperature

Grade 7 Online Video Lessons on Measurement: Temperature
Areas Covered:
1. Temperature conditions
2. Comparing temperature
3. Measuring temperature
4. Conversion of temperature from degrees Celsius to Kelvin
5. Conversion of temperature from Kelvin to degrees Celsius
6. Working out temperature

Lessons (10)

• 1.    Convert the following temperatures to kelvin: a) 24°C b) 40°C c) 3.76°C d) 15.4°C
  2m 57s

• 2.    The highest classroom temperature recorded by Grade 7 learners in a term was 29.5°C. What was the highest temperature of the class during the term in Kelvin?
  1m 18s

• 3.    A trader preserves fresh milk in a refrigerator at a temperature of 4°C. What is the refrigerator temperature on the Kelvin scale?
  0m 58s

• 4.    Mporoi used a thermometer to measure the temperature of boiling soup. The reading on the thermometer was 101°C. What was the temperature on a Kelvin scale?
  1m 1s

• 5.    Convert the following temperatures to degrees Celsius. a) 278 K b) 285.5 K c) 357.2 K
  1m 46s

• 6.    The lowest temperature recorded on a town on a day was 285 K. What was the lowest temperature of the town in degrees Celsius?
  1m 0s

• 7.    Ole Moire poured bathing water in a basin and kept it in the sun to warm. After one hour, the temperature of the water was 313 k. What was the temperature of the water in degrees Celsius?
  1m 27s

• 8.    Muthuma heats pieces of metal and hammers them to different shapes for reuse. One day, he heated a piece of metal to 256°C. After reshaping the metal, he poured cold water on it and its temperature dropped to 172°C. Calculate the temperature drop in Kelvin.
  2m 22s

• 9.    Owila boils eggs for breakfast at 98°C. One day, he realized that the temperature of the water was 43°C. By what temperature in Kelvin should Owila raise the temperature of water to boil the eggs?
  2m 8s

• 10.    A horticultural farmer set the temperature of a greenhouse at 305 K during the planting season. During harvest season, the temperature was 36°C. a) Which of the seasons had a higher temperature? b) By how many degrees was the difference in temperature?
  3m 14s