1. Name ………………………………………………………. Date ………………….
Chapter 3: Environmental protection
measures
Applications of energy sources 2
This worksheet is for Level 2 students only.
You need to know about the different sources of energy used in properties, as well as
the basic operating principles of the different systems. Answer the following questions
about the applications of energy sources.
1 Briefly explain how a wind turbine works.
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2 Suggest five sources of advice on energy conservation.
a) ____________________________________________________________________
b) ____________________________________________________________________
c) ____________________________________________________________________
d) ____________________________________________________________________
e) ____________________________________________________________________
3 Match the following terms related to solar photovoltaic systems with their description.
AC DC Semi-conductor Atom Electron Photon
Term Description
Basic unit of light
Tiny particle part of an atom
Allows passage of electricity in some conditions
Smallest unit of an element
Electricity that flows in one direction
Electricity that flows one way and then in the opposite direction
© Nelson Thornes Ltd 2012 1
Level 2
Worksheet 3