Unit 3 WAVES Quiz

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, meaning it lets the light pass through it.

• The mirror decreases the speed of the light.

Tags

NGSS.MS-PS4-2

A beam of light strikes a mirror at an angle of 45 degrees.

What shape is formed by the beam of light?

• the letter V

• a straight line

• the letter U

• any motion in two directions, such as up and down

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

• different colors, depending on the intensity of the sunlight

• different colors, depending on the position of the observer

Tags

NGSS.MS-PS4-2

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

How does the object appear when someone looks at it?

• white

• black

• different colors, depending on the intensity of the sunlight

• different colors, depending on the position of the observer

Tags

NGSS.MS-PS4-2

Some parts of an object absorb all of the sunlight that strikes them. Other parts reflect and scatter all of the sunlight that strikes them.

What is the object most likely to be?

• a circus tent, which has stripes of many colors

• the fur of a zebra, which has black and white stripes

• a chocolate donut, which has a hole in the center

• a vanilla donut, which has a hole in the center

Tags

NGSS.MS-PS4-2

Transparent​ (a)   Translucent​ (b)   opaque​ (c)  

• a glass window pane
• frosted or cloudy glass
• a white soccer ball

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 low-energy sound waves through the air only

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

• as an encoded message in radio waves

• as tiny packets of sound that travel between air molecules

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

Two friends are talking over mobile telephones.

How are the sounds of their voices 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

How is digital information useful?

Drag and drop the words to correctly complete the explanation. 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

Tags

NGSS.MS-PS4-3