Lightning Conductors and Safety

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What is lightning?

A weak flash of light

A strong flash of electricity (correct)

A loud sound in the sky

A strong wind storm

Why are tall buildings more prone to lightning strikes?

Because they have more electrical appliances

Because they are taller than other buildings (correct)

Because they are made of metal

Because they are located in open areas

What is the purpose of a lightning conductor?

To protect buildings from strong winds

To redirect lightning strikes to the ground (correct)

To attract lightning to a building

To generate electricity for a building

What happens when lightning hits a building with a lightning conductor?

The lightning strikes the conductor and travels to the ground Signup and view all the answers

What is the function of the ground rod?

To provide an earth connection for the lightning conductor Signup and view all the answers

Why do architects and builders include lightning conductors in modern buildings?

To protect the building and its occupants from lightning strikes Signup and view all the answers

What is the primary purpose of using insulators in electrical systems?

To prevent electrical current from flowing to unwanted places Signup and view all the answers

Why do electricians wear thick rubber gloves and safety shoes with thick rubber soles?

To prevent electrical shock from conducting through their bodies Signup and view all the answers

What should you do if you are swimming and there is a thunderstorm?

Get out of the water immediately Signup and view all the answers

What material are special insulators made from to make power lines safe?

Glass or ceramic Signup and view all the answers

Why are power lines held up by strong poles?

To support the weight of the thick metal cables Signup and view all the answers

What is an electrical current considered to be?

A flow of electricity through a path around a closed circuit Signup and view all the answers

What is the term for a material that allows an electrical current to flow through it?

Conductor Signup and view all the answers

How can you test whether a material conducts electricity?

By connecting the material to a simple circuit with one cell and a lamp Signup and view all the answers

What are the best conductors of electricity?

Metals Signup and view all the answers

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 Signup and view all the answers

What are examples of good insulators?

Plastic and rubber Signup and view all the answers

What is the main function of an electrical switch in a circuit?

To control the flow of electricity Signup and view all the answers

What happens to the circuit when a switch is open?

A gap is created, breaking the circuit Signup and view all the answers

What is the purpose of a conductor in a switch?

To close the gap, allowing the current to flow Signup and view all the answers

What would you expect to happen to the lamp in the circuit above?

The lamp will be lit when the switch is closed Signup and view all the answers

What characteristic of a material would make it suitable for use as a switch?

It is a good conductor Signup and view all the answers

What was Teri's method for conducting the investigation?

Using different lengths of wire Signup and view all the answers

What was recorded by Teri in the table?

The brightness of the light Signup and view all the answers

What can be observed from the table?

The shorter the wire, the brighter the light Signup and view all the answers

What is the pattern in the data when the length of wire is increased?

The light becomes dimmer Signup and view all the answers

What can be concluded about Teri's prediction from the results?

The results do not support Teri's prediction Signup and view all the answers