Today we will do a Task 1 with Process format and this topic is quite difficult in the exam questions in recent years.
Consider the following sample lesson: The picture below shows how a hot balloon works.
Topic: How hot air balloons work.
Present simple tense.
There are 2 parts: On the left is the structure / structure, on the right is the operating mechanism of the hot air balloon.
Vocabulary you need to know
Thermal (a) heat
Component (n) Component, part
Ascend (v) Go up → ancestor
Descend (v) Descend → descendant
Mechanism (n) Mechanism
vertical/ horizontal (a) Vertical/horizontal orientation
Intro (1 sentence): title paraphrase
Overview (2 sentences): An overview of 1 sentence about the structure of the hot air balloon and an overview of another sentence about how the hot air balloon works.
Body 1 (3 -4 sentences): Describe in detail the structure of the hot air balloon. Note OSASCOMP (criteria when describing the structure of an object include –
Opinion, Size, Age, Shape, Colour, Origin, Material, Purpose)
Body 2 (3 -4 sentences): Describe in detail how the hot air balloon works.
Sample intro + overview:
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.
Diagram depicting the structure of a hot air balloon and its working mechanism. Overall, the structure consists of several parts, including envelope, skirt, burner and basket. From the diagrams it is also clear that the mechanism of a typical hot air balloon involves the upward circulation of hot air.
Model body 1 – structure:
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’. 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.
The main part of the balloon is a large envelope in the shape of an inverted teardrop. At the top is the ‘parachute valve’ which is a self-closing flap used to regulate the rate of hot air release. The large vertical sections below the valve are called ‘gores’, which are made up of smaller plates. envelope shrinks into a small base called a ‘skirt’. The ‘skirt’ is attached to the basket with ropes, and the lantern hangs above the basket. Inside the basket are tanks of propane gas used to power the burner.
Model body 2 – how it works
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 sustains, pulling the hot air balloon downward.
As for the function of the balloon, the burner combines regular air with propane to heat the air trapped inside the envelope, which then becomes lighter and thus causes the balloon to rise. To begin the descent, the air cooled and became heavier, pulling the balloon downward.
Some ideas and leading vocabulary as above, please refer. Practice writing and follow your ideas so you don’t have to worry about this exam anymore.
See more difficult horse topics: IELTS Writing Task 1 Horse Evolution Sample