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Презентация на тему Parachuting (skydiving)

VocabularyDefinitionHistoryRulesMy personal attitudePLAN:
(skydiving) parachuting VocabularyDefinitionHistoryRulesMy personal attitudePLAN: Vocabulary:Descent – спуск, снижение;Velocity – скорость, быстрота;Aircraft – авиация;Capsule (cell) – капсула, Definition: parachuting - device that slows the vertical descent of a body History:  Dating to the 1100s of the Chinese using parachutes for Rules:   Typical jump altitudes in modern times for experienced skydivers Rules:  Freefall speeds for skydivers falling “belly to earth” range from The main parachute increases the skydiver's air resistance and slows the diver's My personal attitude:In my opinion, parachuting is very dangerous and extreme sport, Thank you for your attention!
Слайды презентации

Слайд 2 Vocabulary
Definition
History
Rules
My personal attitude



PLAN:

VocabularyDefinitionHistoryRulesMy personal attitudePLAN:

Слайд 3 Vocabulary:
Descent – спуск, снижение;
Velocity – скорость, быстрота;
Aircraft –

Vocabulary:Descent – спуск, снижение;Velocity – скорость, быстрота;Aircraft – авиация;Capsule (cell) –

авиация;
Capsule (cell) – капсула, отсек;
Supple – запас;
Altitude – высота

над уровнем моря;
Range – предел;
Feet – фут;
Cord – веревка, шнур;
Chute – парашют, стремнина;
Ram-air parachute – гидравлически воздушный парашют;
Glider – планёр;
Miles per hour (mph) – миль в час.

Слайд 4 Definition:
parachuting - device that slows the vertical

Definition: parachuting - device that slows the vertical descent of a

descent of a body falling through the atmosphere or

the velocity of a body moving horizontally. The parachute increases the body's surface area, and this increased air resistance slows the body in motion.

Слайд 5 History:
Dating to the 1100s of the

History: Dating to the 1100s of the Chinese using parachutes for

Chinese using parachutes for amusement. In the West, however,

parachutes were originally conceived for human use as a means of providing a safe escape from a burning building. It was Leonardo Da Vinci who first proposed this use in 1483.
The first person to demonstrate the use of a parachute in action was Louis-Sebastien Lenormand of France in 1783.

Слайд 6 Rules:
Typical jump altitudes in modern

Rules:  Typical jump altitudes in modern times for experienced skydivers

times for experienced skydivers range from 7,500 to 15,000

feet above ground level, yielding a freefall time of between 40 and 85 seconds. The length of the freefall is dependent upon such factors as exit altitude, opening altitude, and fall rate. The fall rate is determined by the jumpsuit the skydiver wears and the way in which the suit conforms to the body during the freefall and by the diver's body configuration relative to the ground.

Слайд 7 Rules:
Freefall speeds for skydivers falling “belly

Rules: Freefall speeds for skydivers falling “belly to earth” range from

to earth” range from 110 to 130 miles per

hour. The altitude at which a parachutist opens the canopy varies, but 2,500 feet is usual. With most parachutes, the skydiver pulls a cord that releases the pilot chute, a small chute opened by air resistance that acts to pull the main parachute out from the bag in which the parachutes are encased.

Слайд 8 The main parachute increases the skydiver's air resistance

The main parachute increases the skydiver's air resistance and slows the

and slows the diver's fall to the ground to

a speed of around 10 mph. Modern ram-air parachutes are made of seven to nine nylon cells that inflate and act as a wing, or glider; these canopies allow the parachutist to steer and sail gently to the ground.

Rules:


Слайд 9 My personal attitude:

In my opinion, parachuting is very

My personal attitude:In my opinion, parachuting is very dangerous and extreme

dangerous and extreme sport, but very interesting. Always I

dream to jump with parachute, but I have not got any opportunities.
However, in my future I will try to get around to doing my dream.




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