Farallon Islands,California,USA: Surfer riding wave by twisting and turning on surfboard on bright sunny day in slow motion

Medium shot of a surfer riding a wave in California. He is wearing a yellow and black wetsuit as he rides on wave on his surfboard.

A rodeo-rider wearing a Stetson hat and leather chaps rides a bucking bronco out of the gate into a packed rodeo arena before eventually jumping off. USA.

Farallon Islands, California, USA: Underwater view of surfer lying on surfboard just about to break through surface of sea

Painted Desert, Arizona, USA. Slow-motion, medium long-shot of an unidentifiable cowboy on horseback silhouetted against gold-tinted dust filled background twirling lasso. A dog runs across frame at foot of horse.

Farallon Islands,California,USA: Surfer rides wave close to camera on surfboard in slow motion, water sprays camera as surfer passes

A rodeo-rider wearing leather chaps rides a bucking bronco out of the gate into a packed rodeo arena before eventually jumping off. USA. The rider punches the air in mock-frustration as he jogs back across the arena.

Farallon Islands, California,USA: Surfer towards camera riding wave on surfboard in slow motion, water sprays camera as surfer passes

Teenagers doing Parkour on scaffolding (also known as Free Running) at extreme sports event. They jump into acrobatic moves and roll over.

Close side view of small boy writing into exercise book in classroom

Pan following a Stetson-wearing rodeo rider on horseback riding around a spectator-packed rodeo arena in the USA.

Panning shot following a female rodeo rider wearing a red Stetson riding a horse at full gallop around a rodeo arena.

Painted Desert, Arizona, USA. Slow-motion, close-up, pan up of an unidentifiable cowboy on horseback galloping towards camera silhouetted against gold-tinted dust filled background.

A point of view shot aboard an ultra-light aircraft. The aircraft is descending and lands at a small airfield.

Medium shot of a surfer dressed in a wetsuit negotiating a wave in California.

Children's fingers pointing to words on page as if reading aloud from book on desk.

Painted Desert, Arizona, USA. Slow-motion, medium long-shot of an unidentifiable cowboy on horseback in background rounding up cattle in foreground. Cowboy and cattle are silhouetted against gold-tinted dust filled background.

Anonymous American Baseball player wearing Yankee uniform swings baseball bat repeatedly during practice on pitch

Camera looks down on two pairs of feet fighting to gain control of football during game

Rows of empty chairs and tables to be used for examinations in school gym

Speeded up footage of people dancing the Charleston.

Close view of pencil holder on desk and empty Primary school classroom in background

Hands of an unidentifiable person cooking squid on a hotplate in a hutong area of Beijing, People's Republic of China.

A small aircraft takes off and flies into the sky.

Slow motion black and white footage of Cambridge rowing team rowing on the River Thames dressed in white outfits in the 1930s. Water splashes as the blades of oars hit the water.

A small aircraft takes off and flies into the distance.

Group of children playing in distance seen playing behind gate, young girl in winter coat stands facing camera next to bike stand

A rodeo-rider wearing a Stetson hat and leather chaps struts across a rodeo arena in the USA.

A team of men rowing a boat along a river.

Legs and feet of Primary school children wearing summer school uniform, walking toward camera up slope together holding hands

A tiger cub crawling along the ground.

Weather sign saying 'Cloud' hanging in primary school classroom, camera pans to school children sat around table as young female teacher approaches them with plates.

Three pairs of legs wearing dirty socks sitting on bench in changing room

Iran: Snowboard slalom competition showing ice covered slope with red and blue flag markers and snowboarders travelling through the competition course

Back view of lines of pupils sat at tables during exam in school hall as male teacher walks amongst desks

Legs and feet of football players running across each other during football practice

Bodies and arms of young Secondary school children, wearing casual summer clothing who are briefly standing in queue, camera pans to legs of children as they walk in single file across school playground

A biplane flying low over a field.

Camera pans along rows of empty exam tables in school gym

Blurred image of group of boys (one with small bike) hanging around outside school wearing coats, shot framed by railings on school gate.

An industrial robot being showcased.

Point of view shot from a travelling sleigh pulled by a team of husky dogs in an Arctic, snow covered valley.

Two jockeys race their horses at the Grand National.

Camera tracks along classroom floor past high stools, legs of pupils seen as they leave the classroom.

Silhouette of school girl jumping over skipping rope watched by other children in playground, seen from ground level on bright sunny winter day

Three pairs of legs on bench in changing room, wearing sports socks and footwear (shoes/trainers), then legs walk away

Blurred image of Secondary schoolchildren running around in playground wearing uniform and winter clothing

Two people on a raft are pulled along by a speedboat. They then fall off the raft and into the water.

Close shot of foot kicking football on pitch with goal in background as legs of referee stand poised as if at start of game

A crowd watches jockeys race their horses at the Grand National. They jump over a high hedge and gallop off. One horse trips and the jockey tumbles to the ground.