Please Review My Ielts Writing Part 1

The image illustrates the function of a hot air balloon.

Overall, the hot air balloon is made up of an envelope connected with the basket by ropes. Moreover, the balloon is able to fly towards the sky by using flame from the mix of propane and air to push the whole ballon towards the air.

The envelope of the hot balloon includes parachute valve, gores, panels, and skirt. The parachute valve is functioned as a self-sealing flap that allows a controlled amount of hot air to escape. The gores and panels form the structure and the shape of the balloon. The propane cylinder is outside of the basket, where the people stand, is connected with the burner.

The burner produces flame when propane is mixed with air. The hot air being produced from the flame then is released into the balloon through the skirt. The hot air, which is lighter than the cool air outside, continuously be produced into the balloon and pushes the whole balloon upwards the sky.