Section 3: Electrician
An electrician is a specialist of electricity. Commonly referred to as “Sparkies” in Australian slang,
these skilled workers will help build, install, and repair electrical systems. The wiring and power box
at your house would have been constructed and connected by an electrician. Electricity or “current”
exists thanks to the movement of a very special particle known as the …
Electron!
Instructions: Copy and complete the questions into your science books.
Question 1
Define “Electron”
Question 2
Draw a model of the atom. Identify which particle is the electron
Question 3
Copy and fill out the following table:
Particle
Mass (kg)
Electron
Proton
Neutron
Charge
(Positive/Negative/Netral)
Question 4
Briefly describe how the electron was discovered.
Question 5
Define “Electrical current”
Charge (C)
Is it a fundamental
particle? (Yes/No)
Question 6
What causes the electrons to move along a wire?
Question 7
Will electrons flow through a wire that is disconnected? Explain why or why not.
Question 8
What is the difference between a “High current” and a “Low current”?
Question 9
What can happen to the human body if it is exposed to a high current?
Question 10
What PPE do electricians wear to protect themselves against electricity?
Question 11
What are the essential components of a working circuit?