1 a) What do you
mean by Fossil fuels?
b) How do you think that fossil
fuel may affect the Environment?
2. What are
the energies that are not depend on Solar energy?
3.a) What
is the use of Resistor in the circuit?
b)Name any
three electrical component that uses resisto
4. What are three benefits or
advantages of hydropower?
5. Differentiate between Solar and Wind energy
6.Draw the diagram in the following situations
a)
A circuit
containing two bulbs and one cell in series.
b)
A circuit
containing 4 bulbs, a switch, two cells in series and a voltmeter measuring the
voltage across one of the bulbs.
7. Write down the three ways in
which heat may he transferred from one place to another
8. Which of the following is the
worst conductor of heat?
air copper vacuum glass rubber stee
9. How is heat transferred by
conduction
10. Which is the better conductor, a solid rod of copper or a hollow rod of copper of
the same length and diameter
11. Which of the following metals
is the best conductor of heat?
silver steel aluminium copper
12. Why do people wear layers of clothing in the winter and birds fluff up
their feathers to keep themselves warm?
13. By what process is heat
transferred down a metal rod?
10 Explain the following:
(a) saucepans for use on a hot
plate are made with copper bottoms;
(b) these bottoms are made as flat
as possible;
(c) the handle of the saucepans are
made of wood or plastic
