Question

1. A hot-air balloon, open at one end, rises when the air inside is heated by a flame. How does the temperature, pressure and density of the air inside the balloon compare to the air outside? For each property, state if they are higher, lower or the same inside the balloon versus outside.

2. What is the atomic mass of Aluminum (Al)? Give your answer in both atomic mass units and in kilograms. Mass = _____________ u (atomic mass units) Mass = _____________ kg

3. How did early thermometers measure changes in temperature?

4. 25 degrees Celsius is how many degrees in Fahrenheit?

5. The amount of thermal expansion of an object depends on what three factors?

Answer 1