The video explains how a balloon behaves when exposed to cold and heat. Initially, the gas inside the balloon contracts due to the cold, causing the balloon to shrink. When the balloon is heated, the gas expands, and the balloon returns to its original size.

What is the initial question posed in the video?

• Where is the balloon going?

• Why does the balloon float?

• What happens next?

• How is the balloon made?

What happens to the gas inside the balloon when it is cold?

• It expands and the balloon grows.

• It contracts and the balloon shrinks.

• It evaporates and the balloon disappears.

• It remains the same and the balloon stays the same size.

Why does the balloon shrink when taken out in the cold?

• Because the air pressure outside increases.

• Because the balloon material hardens.

• Because the gas inside contracts.

• Because the gas inside evaporates.

What causes the balloon to return to its original size?

• The gas inside expands when heated.

• The balloon is stretched manually.

• The balloon is filled with more gas.

• The balloon is placed in a vacuum.

How does heat affect the gas inside the balloon?

• It causes the gas to expand.

• It causes the gas to contract.

• It causes the gas to solidify.

• It causes the gas to change color.