Introduction to: Hot Air Balloon Travel. What is a Balloon? Balloon… ◦ A spherical craft made of silk, rubber, or other suitable nonporous materials that.

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Presentation transcript:

Introduction to: Hot Air Balloon Travel

What is a Balloon? Balloon… ◦ A spherical craft made of silk, rubber, or other suitable nonporous materials that contain either hot air or a gas that is lighter than air.

Key Characteristics of a Balloon 1. The gas or fluid that fills the balloon must be lighter than air. (hot air, steam, helium, hydrogen). 2. The envelope or container must be: a.Light weight b.Airtight c.Securely Fastened d.Strong enough to support a man. 3. The ability to produce gas in sufficient quantities must exist.

Basic Parts of a Balloon

The Science of Balloon Travel Pressure Buoyancy Gravity

The Science of Balloon Travel Pressure Buoyancy Gravity

The Science of Balloon Travel Pressure Buoyancy Gravity

What is Density? …how closely molecules are packed together. … a more dense fluid or object. 1.Object or fluid weighs more… 2.Molecules move slower… 3.Example: Ice … a less dense fluid or object. 1.Object or fluid weighs less… 2.Molecules move faster… 3.Example: Steam

What is Buoyancy? …an upward force created by a difference in density between a fluid and an object. What is a fluid? – A substance that conforms to the shape of its container. (Examples: Water & Gases)

What is Buoyancy? Relative to how Hot Air Balloons Operate. You can make air less dense by heating it!

What is Buoyancy? Relative to how Hot Air Balloons Operate.