Question

9. A builder wants to make a room soundproof in a new home. The builder should use materials that ________________________.(1 point)
Responses

reflect sound waves and prevent echoes
reflect sound waves and prevent echoes

reflect sound waves and create echoes
reflect sound waves and create echoes

absorb sound waves and create echoes
absorb sound waves and create echoes

absorb sound waves and prevent echoes
absorb sound waves and prevent echoes
Question 10
10. A student puts a piece of black paper and a piece of white paper in the same sunny spot. After 30 minutes, she observes that the black paper feels warmer than the white paper. Which best explains the student's observation? (1 point)
Responses

The black paper prevents waves from the sun from reaching the white paper.
The black paper prevents waves from the sun from reaching the white paper.

The black paper receives stronger waves from the sun than the white paper.
The black paper receives stronger waves from the sun than the white paper.

The black paper absorbs more waves from the sun than the white paper.
The black paper absorbs more waves from the sun than the white paper.

The black paper reflects more waves from the sun than the white paper.
The black paper reflects more waves from the sun than the white paper.
Question 11
11. During a baseball game, the sound of the bat hitting the ball can be heard in most parts of the stadium. That sound is weaker at greater distances. What is the cause of this phenomenon? (1 point)
Responses

The sound waves slow down as they move away from the bat.
The sound waves slow down as they move away from the bat.

The sound waves can only travel through certain materials.
The sound waves can only travel through certain materials.

The sound waves are spread out over a large area.
The sound waves are spread out over a large area.

The sound waves are blocked by people in the stadium.
The sound waves are blocked by people in the stadium.
Question 12
12. Which type of waves can travel through a vacuum? (1 point)
Responses

mechanical
mechanical

sound
sound

seismic
seismic

light

Answer 1

9. absorb sound waves and prevent echoes

10. The black paper absorbs more waves from the sun than the white paper.

11. The sound waves are spread out over a large area.

12. light