The picture below shows how a hot balloon works. Summarize the information by selecting and reporting the main features

The diagram depicts the construction of a hot

air

balloon

and its working mechanism.

Overall

, the construction consists of several parts, including the

envelope

, the skirt, the

burner

and the

basket

.

Also

of note is that the mechanism of a typical hot-

air

balloon

involves the thermal regulation of hot

air

. The main part of a hot

balloon

is a large

envelope

which has an inverted teardrop shape. At the top is the ‘parachute valve’ which is a self-sealing flap used to regulate the pace at which hot

air

escapes. The large vertical sections below the valve are called ‘gores’, which are made up of smaller panels. The

envelope

tapers into a small base called

‘skirt’

Correct article usage

a ‘skirt’

show examples

. The skirt is attached to the

basket

using ropes, and the

burner

hangs above the

basket

. Inside the

basket

are propane tanks which are used to power the

burner

. Regarding the function of the hot

air

balloon

, the

burner

combines regular

air

with propane to heat the

air

trapped inside the

envelope

, which

then

becomes lighter and

thus

makes the

balloon

buoyant.

To begin

a descent, the

air

is cooled and effectively becomes heavier, pulling the hot

air

balloon

downward.