Waves 2025

Which characteristic of sound makes it possible for bats to fly in the dark without hitting any objects?

• reflection

• refraction

• absorption

• transmission

Tags

NGSS.MS-PS4-2

Which best describes the relationship between the material and the speed of sound as shown in this chart?

Speed of Sound (m/s)

Air (20°C)= 344

Seawater = 1531

Brick = 4176

Steel = 6000

• the denser the material, the faster the speed of sound

  
  

• the denser the material, the slower the speed of sound

  
  

• the more opaque the material, the slower the speed of sound

  
  

• the more transparent the material, the faster the speed of sound

  
  

Students want to raise the temperature of water in a glass jar. The jar is on a table in full sunlight. The fastest way to increase the temperature without using a hot plate is to place...

• black material around the glass.

  
  

• a thermometer in the water.

  
  

• clear plastic wrap around the glass.

  
  

• a straw in the water.

  
  

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Why does a leaf look green in the summer?

• The leaf reflects green light and absorbs other colors of sunlight.

  
  

• The leaf uses green light to make food in its cells.

  
  

• The leaf produces green light in its cells.

  
  

• The leaf absorbs green light.

  
  

Tags

NGSS.MS-LS1-6

Why can you see someone clearly through a clear glass window but not through a frosted glass window?

• Clear glass transmits light, but frosted glass scatters light.

  
  

• Clear glass reflects light, but frosted glass absorbs light.

  
  

• Clear glass transmits some light, but frosted glass absorbs all light.

  
  

• Clear glass scatters some light, but frosted glass transmits all light.

  
  

Tags

NGSS.MS-PS4-2

How does the color of an object affect its interaction with energy it receives from sunlight?

• Darker colors reflect more sunlight and heat.
• Lighter colors absorb more sunlight and heat.
• All colors interact with sunlight in the same way.
• Darker colors absorb more sunlight and heat, while lighter colors reflect sunlight.

Tags

NGSS.MS-PS4-2

The action that results when waves made in a pond strike the edges and bounce back is known as...

• reflection
• diffraction
• refraction
• absorption

Tags

NGSS.MS-PS4-2

The speed at which sound waves travel depends on the...

• frequency of the sound waves
• medium through which they travel
• temperature of the environment
• amplitude of the sound waves

The speed of sound is generally greatest in

• solids and lowest in gases

• gases and lowest in solids

• liquids and lowest in gases

• solids and lowest in solids

What happens to a ray of white light when it passes through a prism?

• The white light is bent and dispersed into a rainbow.

• The white light is reflected back without any change.
• The white light remains unchanged.
• The white light is absorbed by the prism.

Tags

NGSS.MS-PS4-2