An activity to demonstrate that air contains moisture is to use a mirror. Hold a mirror up to your mouth and breathe on it. The moisture in your breath will condense on the mirror, showing that the air you exhaled contained moisture.
One way to show that your breath contains moisture is by exhaling onto a mirror or a cold glass surface. The moisture in your breath will condense and form droplets on the surface, making it appear foggy or misty. This is a simple way to visually demonstrate the presence of moisture in your breath.
Your breath contains moisture. On a cold day the warm moisture in your exhaled breath enters the cold air outside your body and forms a "fog" made of small droplets of water.
When you breathe on a glass, the warm air from your breath contains moisture. When it comes into contact with the cool surface of the glass, the temperature difference causes the moisture to condense into tiny droplets, creating fog or mist on the glass.
No, it is not possible to make your breath so hot that it will make an object catch fire because our breath contains carbon dioxide and moisture.
When you breathe on glass, the warm moisture in your breath condenses upon contact with the cold glass surface, forming tiny water droplets that create a foggy appearance. This happens because the glass is cooler than the warm, humid air you exhale, causing the moisture to change from a gas to a liquid state.
The cold causes the moisture in your breath to condense, making it visible.
Exhaled breath contains warm, moist air from your lungs. When this warm air comes into contact with cold air, it cools down and can no longer hold as much moisture, leading to condensation. This is similar to how a glass of cold water will cause moisture to form on the outside of the glass in a warm room.
When it is cold, you can see your breath as condensation. This is because the warm air you exhale contains water vapor, which turns into visible moisture when it hits the cold air.
Fogging a mirror with your breath occurs when moisture from your warm breath hits the cooler surface of the mirror, causing condensation to form. This effect is temporary and the foggy appearance will disappear as the moisture evaporates.
When you breathe on a window, the warm air from your breath contains moisture. When this warm, moist air comes in contact with the cooler surface of the window, it rapidly cools down. As a result, the moisture condenses into tiny water droplets that appear on the glass.
The moisture from your breath condenses. It condenses and evaporate due to the drop in temperature, in comparison with your body.