Question

The data shows the speed of sound through air and water from the sea at 21°C. How does the speed of sound compare in sea water to the speed of sound in air? (1 point)
a. The speed of sound is slower in sea water because the molecules in sea water are farther from each other and more dense.
b. The speed of sound is slower in sea water because the molecules in sea water are closer to each other and less dense.
c. The speed of sound is faster in sea water because the molecules in sea water are farther from each other and less dense.
d. The speed of sound is faster in sea water because the molecules in sea water are closer to each other and more dense.

Answer 1

material: speed (m/s)
Air 331
Sea water 1,524

Answer 2

A student does an experiment to find out how the speed of sound waves changes when traveling in different mediums (solid, liquid, gas). The table below shows the different speeds of the sound wave in each medium but does not list the specific medium.
Medium Speed before (m/s)
A 682
B 1,293
C 4,440

The student knows that sound travels through room temperature air at 343 m/s. Using this information and the student's results, which medium is the solid, the liquid, and the gas? (1 point)

A.) A is the solid, B is the liquid, and C is the gas.
B.) A is the gas, B is the liquid, and C is the solid.
C.) A is the liquid, B is the gas, and C is the solid.
D.) A is the gas, B is the solid, and C is the liquid.

Answer 3

Why would we see a golf ball flying through the air before we hear the noise of the golf club hitting the ball?(1 point) Responses because light and sound travel at the same speed through air because light and sound travel at the same speed through air because sound travels slower through air compared to light because sound travels slower through air compared to light because sound travels faster through air compared to light because sound travels faster through air compared to light because only light must travel through matter to be seen

Answer 4

how can we make a ray of light bend toward the normal?
a. we can make it travel through glass
b. we can make it travel from air into glass
c. we can make it travel from glass into air
d. we can make it travel through water

Answer 5

what happens when light waves travel from air through a solid?
a. the light waves will move in a zigzag line
b. the light waves will move in a straight line
c. the light waves will slow down in the solid medium and bend
d. the light waves will speed up in the solid medium and bend