Waves Information & Technology Quiz

There are many devices that rely on

wireless electromagnetic

transmission, including cell phones,

laptop computers, airplanes, and

even some types of televisions. With

the large number of devices

communicating wirelessly, how are

the signals kept from going to the

wrong place?

• Each device has an internal

  code that has to match the

  code of an incoming

  transmission.

• Different devices operate on

  different wavelengths of the

  electromagnetic spectrum

• The signals are routed

  through the wireless network

  like a post office sorts mail

  by zip code.

• Devices with larger antennae

  use higher frequencies and

  devices with smaller

  antennae use lower

  frequencies to communicate.

Tags

NGSS.MS-ETS1-3

Nannette was working on cleaning up

the noise from an analog signal and

from a digital signal. Which signal

would she have a harder time erasing

the noise from?

• analog, because it is a

  continuous signal with

  infinite values, and the noise

  is blended in

• analog, because it is a

  discrete signal made up of

  ones and zeroes, and noise is

  blended in

• digital, because it is a

  continuous signal with

  infinite values, and noise is

  blended in

• digital, because it is a

  discrete signal made up of

  ones and zeroes, and noise is

  blended in

Tags

NGSS.MS-PS4-3

Nisha was studying to be a software

engineer. She wanted to work on

improving communications for

various devices. Which of the

following are ways that software can

be used in communication

technologies? Choose the two that

apply.

• better antennae for better

  range

• ability for encryption for

  security

• thicker wires for durability

• interpreting data for clearer

  transmissions

• increasing bandwidth for

  speed of transmissions

Tags

NGSS.MS-PS4-3

Elena is using a computer program to

make a model of a transverse wave.

The program allows her to

manipulate different parts of the

wave. Elena wants to manipulate her

model to make a wave that carries

less energy than the wave she started

with by changing one variable. Which

of the following describes how Elena

could change her model to

accomplish her goal?

• increase the distance

  between two compressions

  or two rarefactions

• decrease the distance

  between two compressions

  or two rarefactions

• decrease the distance

  between two crests or two

  troughs

• increase the distance

  between two crests or two

  troughs

Tags

NGSS.MS-PS4-1

A student tied a rope to a tree and

created a periodic wave traveling

through the rope by making it vibrate

up and down. What is traveling

through the wave?

• energy only

• mass only

• both mass and energy

• neither mass nor energy

Tags

NGSS.MS-PS4-1

John and his son Andrew were

spending the day fishing off the pier

over the ocean. Andrew began

counting the waves as they passed

under the end of the pier. He

mentioned to his father that he

repeatedly counted the same number

of waves pass at each 10-second

interval. What was Andrew actually

measuring?

• wavelength

• frequency

• speed

• amplitude

A transverse wave moves through a

medium _________________ to the

direction of particle movement.

• perpendicular

• parallel

Tags

NGSS.MS-PS4-1

A longitudinal wave moves through a

medium _____________to the direction

of particle movement.

• perpendicular

• parallel

What can you infer about two

soundwaves with identical amplitudes

and different energy?

• They are both mechanical

  waves.

• They must have the same

  wavelength.

• They must have different

  frequencies.

• They must be different kinds

  of waves.

Tags

NGSS.MS-PS4-1

Elias was reading a book about the

history of Morse code. He was

particularly interested in how the

circuits allow the code to be created

and sent. The signal is created by

pulses of energy called a(n)

____________ when a switch is closed

on a circuit.

• wave pulse

• wave beat

• wave thump

• wave stop

Tags

NGSS.MS-PS4-1