1. In which of the following situations is a sound wave most likely to travel through air?

A) An alarm clock rings in a vacuum.
B) A giant star explodes.
C) A grasshopper eats a leaf.
D) An astronaut uses tools in space.

2. Which of the following factors determines the loudness of a sound?

A) Frequency of the sound.
B) Amplitude of the sound.
C) The temperature of the medium.
D) The density of the medium.

3. Which of the following affects the speed of sound?

A) The amplitude of the wave.
B) The frequency of the wave.
C) The phase of the medium.
D) The wavelength.

4. A blind person walks through the neighborhood making loud clicking noises with his tongue. He doesn't use a walking stick nor does he have a seeing-eye-dog. However, he avoids ever obstacle and is able to navigate his way around the neighborhood safely. What can be inferred from the given information?

A) He is detecting the reflection of sound waves.
B) He is detecting the refraction of sound waves.
C) He is detecting the absorption of sound waves.
D) He is detecting the diffraction of sound waves.

Please help quickly!! Thanks!

1.C

2.B
3.C
4.A
5.A

1.C

2.B
3.C
4.A

5 is A

1.c

2.b
3.c
4.a
5.a
These are the answers I took the test and I got 100%.

NOW I CAN GO TO COLLEGE

K, Thanks Anna. That's what I thought. :D

IS 1 ACTUALLY C?

c

b
c
a
a

lashyla is correct

1. C

2. B
3. C
4. A
5. A
100% 5/5 :)