Conductors and Insulators: Testing Everyday Materials in a Science Lab

Mrs. Navi conducts a science lab from her kitchen, demonstrating the concepts of insulators and conductors. She tests various materials, including a paper clip, different types of tape, coins, and dough, to see if they conduct electricity. The video concludes with a summary of the findings, emphasizing that metals and salt-containing dough are conductors, while other materials like tape and sugar dough are insulators.

What is the main purpose of the science lab introduced by Mrs. Navi?

• To predict the weather

• To understand the difference between insulators and conductors

• To learn about the kitchen setup

• To study the properties of water

What happens when a paper clip is connected in the circuit?

• The bulb does not light up

• The circuit breaks

• The battery drains

• The bulb lights up

Which type of tape was found to be an insulator?

• Copper tape

• Electrical tape

• Masking tape

• Duct tape

What was the result when a penny was tested in the circuit?

• The penny melted

• The bulb did not light up

• The bulb lit up

• The circuit exploded

Which of the following coins was NOT tested for conductivity?

• Dime

• Nickel

• Penny

• Half dollar

What ingredient in dough A made it a conductor?

• Sugar

• Flour

• Salt

• Water

What was the result when dough B was tested in the circuit?

• The bulb did not light up

• The circuit broke

• The dough melted

• The bulb lit up

What is the role of salt in the human body according to the video?

• It acts as an insulator

• It makes the body a conductor

• It has no effect

• It dehydrates the body

What is the conductivity property of pure water?

• Magnetic

• Radioactive

• Conductor

• Insulator

What additional materials in water can make it a conductor?

• Carbon dioxide

• Minerals and salts

• Hydrogen

• Oxygen