Question

SVUI
it
a)
Name any four sources of heat.
What is heat? Write its SI unit.
c)
List some uses of heat in our daily life.
d)
What is temperature? Write its SI unit.
(e) What is bio-fuel? Write any two examples.
What is fossil fuel? Write any two uses of fossil fuels.
(f)
(g)
(h) Heat is a form of energy. Justify.
(i) What are the effects of heat?
(j)
What happens when water is heated for a long time?
(k) Name any three devices that change electricity to heat energy.
(1)
The sense of hotness and coldness by touching does not always w
well. Explain
(m) What is a thermal expansion? Write its two merits and demerits e
NO (n) A bottle has a metallic cap which is very tightly closed and it cann
of
about
What are the scales of measurement of temperature?​

Answer 1

Answer:

A

four sources of heat are

sun

chemical

nuclear

fire