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Saturday, 16 September 2006 ©RSH Number Map Scales Models
Saturday, 16 September 2006 ©RSH Map Scales This is a map of Milford Haven. The scale is 1 : Map Scales This is a map of Milford Haven. The scale is 1 : Background
Saturday, 16 September 2006 ©RSH A scale of 1 : means that 1 cm on the map is equivalent to cm (1000 m or 1 km) in real life. Background
Saturday, 16 September 2006 ©RSH Map Scales This is another map of Milford Haven. The scale is 1 : 5000 Every 1 cm on the map is the same as 5000 cm (or 50 m) in real life. Map Scales This is another map of Milford Haven. The scale is 1 : 5000 Every 1 cm on the map is the same as 5000 cm (or 50 m) in real life. Background
Saturday, 16 September 2006 ©RSH On a map of scale 1 : 10000, a road is 3 cm long. How long is the actual road? Example Answer The road is 3 x cm = cm long = 300 m Answer The road is 3 x cm = cm long = 300 m A field is 1.5 km long. How long would the field be on a a map of scale 1 : 50000? Answer 1.5 km = 1.5 x 1000 m = 3 cm = 1500 m = 1500 x 100 cmThe field is 3 cm long on the map = cm Answer 1.5 km = 1.5 x 1000 m = 3 cm = 1500 m = 1500 x 100 cmThe field is 3 cm long on the map = cm
Saturday, 16 September 2006 ©RSH Exercise 1.On a map of scale 1 : , the distance between Tower Bridge and Hammersmith Bridge is 12.3 cm. What is the actual distance in km ? 12.3 x = cm = m = 12.3 km 2.If the scale of a map is 1 : , what will be the length on this map of a road which is 5 km long ? 5 km = 5 x 1000 x 100 = cm = 50 cm
Saturday, 16 September 2006 ©RSH Scales Scales are also used to make models. This is a model of a sports car using a scale of 1 : 18. Every measurement on the model is 18 times smaller than on the real car. Every measurement on the real car is 18 times bigger than on the model. Scales Scales are also used to make models. This is a model of a sports car using a scale of 1 : 18. Every measurement on the model is 18 times smaller than on the real car. Every measurement on the real car is 18 times bigger than on the model. Background
Saturday, 16 September 2006 ©RSH Exercise A model of airplane is made using a scale of 1 : 20. a)The wing of the model is 30 cm. How long is the wing on the real plane ? b)The tail fin of the real plane is 3 m high. How high is it on the model ? a)30 x 20 = 600 cm = 6 m b)3m = 300 cm 300 20 = 15 cm
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