# data[].attributes.headline
the hot air balloon is an example of charles law because with the gas that is heated  it expands and it lets the balloon expand

# data[].attributes.subject
the hot air balloon is an example of charles law because with the gas that is heated  it expands and it lets the balloon expand

# data[].attributes.body
Charles's Law states that the volume of a given mass of gas varies directly with the absolute temperature of the gas when pressure is kept at a constant rate

# data[].attributes.body
Charles' law is that Volume and temperature are proportional so, more heat means more volume.