S8P4 Review Waves

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Put the terms in order of the models of wave behavior

1, 2, 3, 4, and 5.

• diffraction

• reflection

• absorption

• refraction

• transmission

Tags

NGSS.MS-PS4-2

View the models A, B, C, and D. Match the term that best describes the WAVE BEHAVIOR for each model.

• REFLECTION

• C

• TRANSMISSION

• B

• ABSORPTION

• D

• REFRACTION

• A

Answer explanation

A is TRANSMISSION-or light going THROUGH a medium. B is REFLECTION or light BOUNCING off a flat surface. C is ABSORPTION or light going INTO the media. D is REFRACTION or light BENDING as it goes int media of different densities.

Tags

NGSS.MS-PS4-2

What type of wave behavior is pictured above?

• Refraction

• Reflection

• Absorption

• Diffraction

Answer explanation

The wave behavior depicted is diffraction, which occurs when waves encounter an obstacle or opening, causing them to spread out. This is distinct from refraction, reflection, and absorption, which involve different interactions with materials.

Tags

NGSS.MS-PS4-2

The denser a medium, the ________ a sound wave will travel.

• Faster

• slower

• none

• none

Answer explanation

Sound waves travel faster in denser media because the molecules are closer together, allowing the energy to transfer more efficiently. Therefore, the denser a medium, the faster a sound wave will travel.

Tags

NGSS.MS-PS4-2

When an object is white, what is true?

• All colors are absorbed

• All colors are reflected

• Some colors are absorbed and some are reflected

• Some colors are absorbed and other are transmitted.

Answer explanation

When an object is white, it reflects all colors of light and absorbs none. This is why white objects appear bright and vibrant, as they do not absorb any wavelengths of visible light.

Tags

NGSS.MS-PS4-1

When an object is the color indigo, what statement is TRUE?

• All colors except indigo are being reflected

• All colors except indigo are being refracted

• Indigo is being reflected. All other colors absorbed.

• All colors except indigo are being diffracted.

Answer explanation

An object appears indigo because it reflects indigo light while absorbing all other colors. Therefore, the correct statement is that indigo is being reflected and all other colors are absorbed.

Tags

NGSS.MS-PS4-2

Which figure represents the path light takes through a CONVEX lens?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

what is happening to the light?

• A CONVEX lens is CONVERGING the light waves.

• A CONCAVE lens is CONVERGING the light waves.

• A CONVEX lens is DIVERGING the light waves.

• A CONCAVE lens is DIVERGING the light waves.

Answer explanation

A concave lens diverges light waves, causing them to spread apart. This is the correct choice, as it accurately describes the behavior of light when passing through a concave lens.

Tags

NGSS.MS-PS4-2

How does a concave lens differ from a convex lens?

• A CONVEX lens can create a REAL image and a VIRTUAL image--while a CONCAVE lens can only make VIRTUAL.

• A CONCAVE lens can create a REAL image and a VIRTUAL image--while a CONVEX lens can only make VIRTUAL.

• A CONVEX lens can create a REAL image and a VIRTUAL image--while a CONCAVE lens can only make REAL.

• A CONCAVE lens can create a REAL image and a VIRTUAL image--while a CONVEX lens can only make REAL.

Answer explanation

A CONVEX lens can produce both REAL and VIRTUAL images due to its ability to converge light rays, while a CONCAVE lens only produces VIRTUAL images as it diverges light rays, making the correct choice A.

This image is.....

• inverted and smaller

• inverted and larger

• not inverted and smaller

• not inverted and larger

Answer explanation

The image is described as 'inverted and smaller' because it appears flipped and reduced in size compared to its original form, confirming the correct choice.