Question

Heat
Every body emits (gives out) radiant heat. The emission of radiant heat from a body depends upon
temperature and colour.
When radiant heat falls on a body, a part of it is absorbed and the rest is reflected. How much radia
heat a body absorbs and how much it reflects depends on its colour and the nature of its surface. Shin
white bodies are the best reflectors, while rough, black bodies are the best absorbers radiant hea
Black bodies absorb and emit radiant heat the best.
Exercises
Answer the following in not more than 20 words.
1. Give one example to show that heat is a form of energy.
(2) What is temperature? Name the scales used to measure it.
3. If the hotness or coldness of a body is relative, how do we measure its degree of hotness?
4. Mention three changes that heat causes in substances.​

Answer 1

2000pp celsoidud on keiums

Answer 2

Answer:

The most finest example is sun which gives out heat energy heat the planets in our solar system

other examples may be:

Gas stove

burning of dry leaves

2.Temperature is the measurement of level of heat in q substance either it is cold or hot

scales are:

kelvin,Celsius, Fahrenheit and Rankine

3. Degree of can be measured if temperature rises in a substance.

4.Three changes are:

heat changes the temperature

heat expand a substance

heat changes form of a substance.