27 Questions
What is lightning?
A strong flash of electricity
Why are tall buildings more prone to lightning strikes?
Because they are taller than other buildings
What is the purpose of a lightning conductor?
To redirect lightning strikes to the ground
What happens when lightning hits a building with a lightning conductor?
The lightning strikes the conductor and travels to the ground
What is the function of the ground rod?
To provide an earth connection for the lightning conductor
Why do architects and builders include lightning conductors in modern buildings?
To protect the building and its occupants from lightning strikes
What is the primary purpose of using insulators in electrical systems?
To prevent electrical current from flowing to unwanted places
Why do electricians wear thick rubber gloves and safety shoes with thick rubber soles?
To prevent electrical shock from conducting through their bodies
What should you do if you are swimming and there is a thunderstorm?
Get out of the water immediately
What material are special insulators made from to make power lines safe?
Glass or ceramic
Why are power lines held up by strong poles?
To support the weight of the thick metal cables
What is an electrical current considered to be?
A flow of electricity through a path around a closed circuit
What is the term for a material that allows an electrical current to flow through it?
Conductor
How can you test whether a material conducts electricity?
By connecting the material to a simple circuit with one cell and a lamp
What are the best conductors of electricity?
Metals
Why should you never use electrical appliances in the bath or while standing on a wet floor?
Because water is a good conductor of electricity
What are examples of good insulators?
Plastic and rubber
What is the main function of an electrical switch in a circuit?
To control the flow of electricity
What happens to the circuit when a switch is open?
A gap is created, breaking the circuit
What is the purpose of a conductor in a switch?
To close the gap, allowing the current to flow
What would you expect to happen to the lamp in the circuit above?
The lamp will be lit when the switch is closed
What characteristic of a material would make it suitable for use as a switch?
It is a good conductor
What was Teri's method for conducting the investigation?
Using different lengths of wire
What was recorded by Teri in the table?
The brightness of the light
What can be observed from the table?
The shorter the wire, the brighter the light
What is the pattern in the data when the length of wire is increased?
The light becomes dimmer
What can be concluded about Teri's prediction from the results?
The results do not support Teri's prediction
Learn about lightning conductors and how they protect buildings from lightning strikes. Discover why they are positioned on top of buildings and how they work to prevent damage.
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