Waterproof Hanky Experiment Quiz

What is the main goal of the video series presented by Imogen?

• To promote the Institute of Physics

• To engage kids with science at home

• To teach complex physics concepts

• To entertain viewers with magic tricks

Which of the following items is NOT recommended for the waterproof hanky trick?

• A cleaning cloth

• A plate

• A paper hanky

• A glass

What is the first step in demonstrating the hanky's permeability?

• Stretch the hanky over the glass

• Ask a volunteer to assist

• Pour water through the loosely draped hanky

• Flip the glass with the plate

What is the key action to perform the waterproof hanky trick successfully?

• Pour water quickly

• Use a large glass

• Flip the glass and plate quickly

• Use a paper towel

Why does the water not leak out when the glass is flipped with the hanky?

• The hanky absorbs all the water

• The plate holds the water in

• Surface tension prevents leakage

• The glass is sealed tightly

What happens to the air when the hanky is wet?

• It passes through easily

• It gets trapped inside

• It pushes the water out

• It struggles to pass through

What is surface tension compared to in the video?

• A rubber band

• A balloon

• A sponge

• A piece of cloth

What happens to a paperclip when surface tension is broken?

• It floats on the water

• It dissolves in water

• It sinks to the bottom

• It stays suspended

Why is surface tension stronger over smaller holes?

• Because the air pressure is higher

• Because the glass is smaller

• Because the tension is more concentrated

• Because the water is thicker

What is the suggested approach if you're unsure about the science?

• Consult a physics textbook

• Ask a professional scientist

• Ignore the science and just perform the trick

• Experiment and research with family