Sample
Summaries after sample
, 1.4 Safety 1.1 Friction
• Electrical discharge is responsible for the • Friction occurs when two neutral materials
shocks or sparks experienced when touching are rubbed together, causing electrons to
door handles or removing a jersey. move from one material to the other.
• Friction can create charges on plastic petrol • The material that loses electrons develops
containers, leading to sparks that may ignite a positive charge, while the material that
flammable fuel. gains electrons develops a negative charge.
• Lightning is a massive electrical discharge, and • Materials such as plastic, glass, and wool
it is safest to stay away from trees during
Unit 1: are commonly involved in this transfer of
storms because they are high points where Static electrons.
Sample
discharge often occurs.
electricity
Summaries after sample
•
1.3 Polarisation
When a charged object is held near a neutral object, it
causes a separation of charge within the neutral object.
• The neutral object develops a positive side and a 1.2 Forces between charges
negative side, even though the object as a whole remains
• Objects with like charges repel one another,
neutral.
whereas objects with unlike charges attract each
• The side of the neutral object nearest to a negatively
other.
charged object becomes positive and is subsequently
• As soon as charged objects touch, electrons move
attracted to it.
between them until their charges are exactly the
same.
GR8 NS T3 Mindmap Doc Scientia Copyright © www.summariessa.co.za (DO NOT COPY)
, Sample
Summaries after sample
Summaries after sample
, 1.4 Safety 1.1 Friction
• Electrical discharge is responsible for the • Friction occurs when two neutral materials
shocks or sparks experienced when touching are rubbed together, causing electrons to
door handles or removing a jersey. move from one material to the other.
• Friction can create charges on plastic petrol • The material that loses electrons develops
containers, leading to sparks that may ignite a positive charge, while the material that
flammable fuel. gains electrons develops a negative charge.
• Lightning is a massive electrical discharge, and • Materials such as plastic, glass, and wool
it is safest to stay away from trees during
Unit 1: are commonly involved in this transfer of
storms because they are high points where Static electrons.
Sample
discharge often occurs.
electricity
Summaries after sample
•
1.3 Polarisation
When a charged object is held near a neutral object, it
causes a separation of charge within the neutral object.
• The neutral object develops a positive side and a 1.2 Forces between charges
negative side, even though the object as a whole remains
• Objects with like charges repel one another,
neutral.
whereas objects with unlike charges attract each
• The side of the neutral object nearest to a negatively
other.
charged object becomes positive and is subsequently
• As soon as charged objects touch, electrons move
attracted to it.
between them until their charges are exactly the
same.
GR8 NS T3 Mindmap Doc Scientia Copyright © www.summariessa.co.za (DO NOT COPY)
, Sample
Summaries after sample
