Answers:l

1.An orchestra is a large instrumental ensemble that contains sections of string (violin, viola, cello, and double bass), brass, woodwind, and percussion instruments.

2.The typical orchestra is divided into four groups of instruments: strings, woodwinds, brass, and percussion.

3.

•Brass instruments include trumpet, trombone, tuba, French horn, cornet, and bugle.

•Percussion instruments include drums, cymbals, triangle, chimes, tam-tam, glockenspiel, timpani, bells, and xylophone.

•Stringed instruments include the violin, viola, cello, bass, harp, and dulcimer.

•Stringed instruments include the violin, viola, cello, bass, harp, and dulcimer.•Woodwind instruments include flute, piccolo, clarinet, recorder, bassoon, and oboe.