Use this syntax:
CREATE TABLE temp.iowe
AS (SELECT * FROM scott.iowe);
Check this link : http://www.techonthenet.com/sql/tables/create_table2.php
Also note that temp user should have permission to access data in Scott schema.
EDIT:
Command to grant access to another user: Login as Scott and run below command:
grant select, insert, update, delete on iowe to temp;
Check this link for details : http://www.techonthenet.com/oracle/grant_revoke.php