The first diagram below shows the Treble and Bass clef symbols. The treble clef is sometimes known as the ‘G’ clef as the symbol curls around the G line, whereas the Bass clef is sometimes known as the ‘F clef for the same reason
The next diagram below shows the treble and bass clefs in relation to the keyboard. Notice that the lower notes of the treble clef are the same notes on the keyboard as the higher notes of the bass clef.
When notes go above or below the staff lines additional ‘ledger lines’ are created as seen in the high A, B and C of the treble clef.
The next diagram shows how the two clefs are used together (the grand staff) in normal keyboard notation.