Primary homework help rivers uk

Rivers can be difficult and thesis service glasgow university to cross. Cookie Policy. Silt — Small bits of dirt primary homework help rivers uk sand that are carried along by a pgimary. The smaller rivers and streams are called tributaries. Tributary — A smaller river or stream that joins a big river is called a tributary. Every river has a ' source ', a place where the river begins its journey. Even quite small streams can create big valleys over a long time. Lots of animals live in or by rivers and people often find them a good place to live too. Rivers begin at their source in higher ground such as mountains or hills, where rain water or melting snow collects and forms tiny streams. River Keyword Search.