Question

Q1)Write the sources of heat energy .


Q2) Define thermometer .


Q3)A temperature x is recorded both on celsius and Fahrenheit scale .What is the value of x ​

Answer 1

Answer:

1) sun, electric heater , fire, etc.

2) it is a device which is used for measuring the temperature

3) 0°

Answer 2

Answer 1)

• The Sun
• Earth
• Wood and Biomass
• Coal and petroleum

Answer 2)

A device used for measuring the temperature of different objects is called thermometer .

Answer 3)

We know

$\frac{c}{5 } = \frac{f - 32}{9}$

$= > \frac{x}{5} = \frac{x - 32}{9}$

$= > 9x = 5x - 160$

$= > 4x = - 160 \:$

Therefore x = -40