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Delta Modern Language Schools When the switch is opened
Science department (turned off), it opens the
Grade 6
1st term 2024- 2025 electric circuit, so the electric
current can't pass.
When the switch is closed
(turned on), it closes the
electric circuit, so the electric
current passes.
Types of materials
Electric conductors Electric insulators
They are materials through They are materials through
which electric current flows which electric current does
easily. not flow easily.
Examples: all metals & water. Examples: Rubber & plastic
• Most electric wires are coated with rubber or plastic G.R
Because they are bad conductors of electricity to protect people from electric
shock.
• Touching non insulated wire that an electric current flows through
causing an electric shock and may cause death. G.R
Because the human body contains a lot of water which is good conductor of
electricity. 34
