Mention what are the characteristics of “Scope”?

$scope forms the default model in AgularJS. Scope objects can be represented without mentioning the $scope Name

To observer model mutations scopes provide APIs ($watch) To propagate any model changes through the system into the view from outside of the Angular realm A scope inherits properties from its parent scope, while providing access to shared model properties, scopes can be nested to isolate application components Scope provides context against which expressions are evaluated