This old-fashioned 'grandfather clock' pendulum and weight are made of iron. They have been taken out of the clock for adjustment, as the clock is running late. To keep correct time, where might the weight need to be adjusted?

As they went into a left-hand bend, the position of the cars was: first car C, second car B, third car A. As they emerge from the bend, all the cars are level. Which car has traveled at the fastest speed around the bend? 

Three racing cars travel exactly alongside each other as they go round the curve of a racing track which has been raised up into a bank.  Which car is travelling fastest?

The distance from Fenharbour to Brightport across the channel is 10 kilometres. A sailing boat can do this crossing in an hour. On this particular day, the wind and tide conditions are as given on the map. As the boat leaves Fenharbour, in which direction, A, B, C, D, should the boat be headed in order to make the quickest crossing to Brightport?

The drawing shows a cross-section where the land meets the sea. The section covered is 5 kilometres. On a hot day, in which direction, indicated by the four arrows, A, B, C or D, is the wind most likely to blow?

A band passes around all the wheels so that they can all be turned by the driving wheel. When the driving wheel turns in the direction shown, which way does wheel W turn?

Rays of light strike a concave lens. Which diagram, A, B, C or D most correctly shows how the light rays continue after striking the lens?

A, B and C are the backs of three picture frames. These are to be hung from a picture hook on a wall by means of a string attached to each side of the back of the frame. Which picture will be flattest against the wall when it is hung?

In the design for a new dam shown in section above, at which point does the water exert the greatest pressure? 

Four designs for a new dam are shown in section above. Which would be the strongest dam?