2019Name: ______________________________________ Date: ________________________Student Exploration: Coastal Winds and CloudsVoca
bulary: condensation, convection, convection current, land breeze, sea breezePrior Knowledge Questions (Do these BEFORE using the Gizmo.)A hot-air balloon contains a propane burner that directs hot air into the interior of the balloon. You can see the flames in the photo at left.1. What happens when the air inside the balloon is heated
Answer: The balloon floats due to the difference in density
Explanation:
The air inside the balloon is warm as a result of it being heated. As warm air spreads out more, it has a lower density than cooler air.
A substance with a lower density rises over substances with higher densities as those sink lower. With the air in the balloon having a lower density, it will rise above the air outside which is colder and has a higher density.
