1) When a sound gets louder a) The amplitude increases b) The amplitude decreases c) The amplitude stays the same d) The frequency increases e) The frequency decreases 2) When a sound gets quieter a) The amplitude increases b) The amplitude decreases c) The amplitude stays the same d) The frequency increases e) The frequency decreases 3) When a sound gets higher a) The amplitude increases b) The amplitude decreases c) The amplitude stays the same d) The frequency increases e) The frequency decreases 4) When a sound gets deeper a) The amplitude increases b) The amplitude decreases c) The amplitude stays the same d) The frequency increases e) The frequency decreases 5) When a sound is created, there are vibrations which a) Travel through the air b) Travel through solid objects c) Stay in one place

Табло

Визуален стил

Опции

Шаблон за превключване

Възстановяване на авто-записаната: ?