In this SciShow Kids episode, hosts Bill and Webb introduce the concept of displacement, explaining how objects like boats float by displacing water. They demonstrate building a canoe using aluminum foil and test how many marbles it can hold before sinking. The video explains that a boat sinks when its weight exceeds the water it displaces. Viewers are encouraged to experiment with different boat designs and share their results.

What is the main reason boats are able to float on water?

• They are made of lightweight materials.

• They are always moving, which prevents sinking.

• They displace an amount of water equal to their weight.

• They have engines that keep them afloat.

What materials are suggested for making a canoe in the video?

• Cardboard and string

• Plastic and glue

• Aluminum foil and tape

• Wood and nails

What is the purpose of using marbles in the canoe experiment?

• To test how much weight the canoe can hold

• To balance the canoe

• To decorate the canoe

• To make the canoe move faster

What happens when the canoe becomes too heavy?

• It becomes more stable.

• It moves faster across the water.

• It starts to sink lower into the water.

• It floats higher on the water.

What should you do if you want to share your boat experiment results with the hosts?

• Call them directly

• Post a video on social media

• Send a letter to their office

• Email them with a grown-up's help