MEDIUM
7th CBSE
IMPORTANT
Earn 100

Explain with the help of a labelled diagram an experiment to show that liquids expand when heated.

Important Questions on Heat and Its Effects

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q D

Expansion on heating can be a nuisance. Explain giving two examples.

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q D
Convert: 25 °C to °F and 86 °F to °C.
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q D
Calculate the temperature at which the reading on the Fahrenheit scale is double the reading on the Celsius scale.
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q D
What precautions will you take while measuring temperature with a laboratory thermometer? What extra precaution will you take while measuring body temperature with a clinical thermometer?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q 1

You are planning to go to a very cold place where the night temperature drops to -50 °C. Which thermometer will you take with you − mercury or alcohol? Why?

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q 2
Which is greater---- a 1° rise in the Celsius scale or a 1° rise in the Fahrenheit scale?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q 3

Can a clinical thermometer be used to measure the temperature of boiling water? Why?

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 5 - Heat and Its Effects>EXERCISES>Q 4

Why is a laboratory thermometer not used to measure body temperature?