The table displays the velocity of sound in various materials. Based on the data presented in the table, which of the following boys would be able to hear a rock falling off a cliff one kilometer away?(1 point)
a boy sitting on the grass
a boy sitting in a tree with his ear to the bark
a boy swimming in the water
a boy lying down with his ear to the ground
The Table:
Substance Speed (meters per second)
Air 344
Water 1,437
Rock 3,000
Based on the data presented in the table, the boy sitting in a tree with his ear to the bark would be able to hear a rock falling off a cliff one kilometer away. The speed of sound in rock is listed as 3,000 meters per second, which is faster than the speed of sound in air (344 meters per second), water (1,437 meters per second), and would likely travel through the bark of the tree more efficiently than through the ground.
1. a boy sitting on the grass
2. a boy sitting in a tree with his ear to the bark
3. a boy swimming in the water
4. a boy lying down with his ear to the ground
whats the answer