First Year. Unit 3. Melody

A melody (also tune) is described as a series of various pitches sounded in succession.
La melodía se describe como una serie de diferentas alturas en sucesión.

Twinkle, twinkle, little star, from aboutmusictheory.com

Melodic contour describes the linear motion of a melody up and down.  Melodic contour (shape) can be: ascending, descending, linear, undulating, broken line

El perfil melódico describe el movimiento de la melodía. El perfil melódico puede ser ascendente, descendente, lineal, ondulado y quebrado.

Undulating. Good morning, from Teledmus

Broken line. From aboutmusictheory.com

Linear. One note samba. From jazz-styles.com