St. Margaret’s Co-educational English Secondary and Primary School
S.1 Integrated Science
Name: _____________________________(
)
Class: S.1G3
Date: ___________________
Prior Understanding on Energy
1.
(a) Fill in the blanks with different forms of energy.
(i) Sun gives out __light energy_____ and ____heat energy_____.
(ii) ___Sound energy______ is given out when we sing
(b) Name other forms of energy that you know.
Classmates’ responses:
Chemical energy; kinetic energy; potential energy; electrical energy
Point 1: Correct spelling of the forms of energy.
 potential energy ; × potiential energy/ potencial energy
 electrical energy; × electrial energy
Point 2: Confuse energy sources with forms of energy
Solar power & wind power are examples of energy sources, not forms of energy
Point 3:  sound energy and light energy; × sound and light energy
2.
(a) What is the meaning of energy conversion?
Classmates’ responses:
1. Energy conversion means energy can change from one form to another.
2. Energy conversion means intermediate forms of energy may be involved between the initial and final
forms of energy
Which is the ‘meaning’ of energy conversion, (1) or (2)??
(b) Give an energy converter and state how the energy is converted.
Point 1: Correct representation of energy conversion
e.g. Motor changes electrical energy to kinetic energy.
Electrical energy
supplied by the cells
3.
is changed to
--------->
Light energy and heat energy
given out by the lamp
(a) What are fossil fuels?
(b) How are they formed?
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4.
Match the common fuels that we use in daily life with their usages.
Liquefied petroleum gas (LPG)
(
)
Town gas
(
)
a. For cooking
Petrol
(
)
b. For powering vehicles
Diesel
(
)
c. For generating electricity
Coal
(
)
d. For powering aeroplanes
Kerosene
(
)
5.
Electricity is generated by burning fuel in power station. What problems does burning fuel cause to our
health and the environment?
6.
(a) Name some alternative energy sources.
(b) For each of the alternative energy sources given in (a), briefly describe how electricity is generated.
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