1what countries does great britain consist of? what is the capital of each country? 2 what seas, channels and oceans are the british isles washed by? 3 what sea lies between great britain and ireland? 4 what is the highest mountain in britain? 5 what british river is the deepest? 6 what british river is the longest? 7 where is stonehenge situated? what is it? 8 what is the name of the canadian capital? 9 what is the capital of australia?