Waves- Unit 3 End of Unit Test

Which object will change the direction of a beam of light without absorbing any of the light?

• a mirror

• a window

• an object painted black

• an object painted white

Tags

NGSS.MS-PS4-2

How does a mirror affect a beam of light that strikes it?

• The mirror changes the direction of the light

• The mirror absorbs the light

• The mirror transmits the light, letting it pass through.

• The mirror decreases the speed of light

Tags

NGSS.MS-PS4-2

An object absorbs all of the sunlight that strikes it.

How does the object appear when someone looks at it?

• black

• white

An object reflects and scatters all of the sunlight that strikes it.

How does the object appear when someone looks at it?

• black

• white

Tags

NGSS.MS-PS4-2

The basketball ​ (a)   most wavelengths of light that shine on it. However, it ​ (b)   wavelengths in the orange part of the ​ (c)   Some of this light enters the ​ (d)   and is perceived as orange.

• absorbs
• reflects
• visual spectrum
• eye

Tags

NGSS.MS-PS4-2

The flower ​ (a)   most wavelengths of light that shine on it. However, it ​ (b)   wavelengths in the red part of the ​ (c)   Some of this light enters the ​ (d)   and is perceived as red.

• absorbs
• reflects
• visual spectrum
• eye

Tags

NGSS.MS-LS1-6

NGSS.MS-PS4-2

Drag and drop the objects to correctly classify them as transparent, translucent, or opaque.

Transparent- ​ (a)   Translucent- ​ (b)   Opaque- ​ (c)  

• lenses for eye glasses
• frosted or cloudy glass
• a soccer ball

Tags

NGSS.MS-PS4-2

Organize these options into the right categories

Groups:

(a) Transparent

,

(b) Translucent

,

(c) Opaque

• 
• 
• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

Two friends are using mobile telephones to send text messages to each other.

How are the letters and other symbols carried between the two phones?

• as an encoded message in radio waves

• as low-energy sound waves through the air only

• as a variety of sound waves through the air and telephone cables

• as tiny packets of sound that travel between air molecules

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

How is digital information useful? Digital information is data that is represented by ​ (a)   Words, pictures, and sounds can all be ​ (b)   as digital information, and then either stored or ​ (c)   Then, the information can be ​ (d)   to restore it to its original form. All ​ (e)   rely on digital information.

• zeros and ones
• encoded
• communicated
• decoded
• computers