What differences are there between the digital and analog recordings? Choose the TWO that apply.

Analog signals are higher resolution.

Digital signals can be better stored electronically.

Digital signals are continuous.

Analog signals consist of numerical values recorded at a specific time interval.

Digital signals take up more space.

Noah wanted to convert the analog recording into a digital signal so that he could put it on his mp3 player. What could Noah do to get the highest quality digital signal from the analog recording?

higher sampling rate of analog signal

lower amplitude of analog signal

higher amplitude of analog signal

lower sampling rate of analog signal

Sarah enjoys walking to the beach and photographing the sunset. When she downloads the images to her computer, she saves two different versions. She keeps one version with the full amount of pixels, so that she can use the images for any project in the future. In the second version, she reduces the number of pixels by half. What would be a benefit of reducing the number of pixels?

better for creating large posters

The diagram shown is an unlabeled transverse wave. Which of the following statements is TRUE?

Decreasing C will increase the energy.

C represents the amplitude of the wave.

Increasing D will decrease the energy.

Increasing C will increase the energy.

The diagram shown is an unlabeled transverse wave. Which of the following statements is TRUE?

D is the amplitude of the wave.

B is the compression of the wave.

C is the frequency of the wave.

Which of the following is TRUE about the different types of wave?

Mechanical waves can be either longitudinal or transverse.

Sound waves are both electromagnetic and longitudinal.

Electromagnetic waves require a medium and cannot travel through space.

Longitudinal waves vibrate matter at right angles.

A student is using a metal coil to model the properties of different types of waves. Based on the image below, which of the following is most likely FALSE?

The student is investigating how to determine the frequency of a transverse wave.

The student is modeling longitudinal waves.

The metal spring vibrates parallel to the direction of energy movement.

The student is modeling how sound waves travel.

Which of the following describes an advantage of parallel circuits?

If one device goes out, the others are unaffected.

Each device shares the voltage.

Adding devices reduces the current.

More voltage is needed to reach an appropriate current.

Which of the following would result in a circuit with 1.2 amps of current?

a 3-V battery and a 2.5-Ω resistor

a 6-V battery and a 10-Ω resistor

a 1.5-V battery and a 5-Ω resistor

a 4.5-V battery and a 7.5-Ω resistor

Which of the following is TRUE about the circuit shown?

Adding another battery would increase the brightness of each light bulb.

The circuit is an open circuit.

If one light bulb goes out, the others will be unaffected.

The circuit is a parallel circuit.

A musician records and mixes his own music. His process includes playing each instrument individually while recording the music on his computer. He then uses special software to combine the individual recordings. Lastly, he records his voice as he sings the accompanying lyrics, adding this to the instrumental background. He uploads the final product to a cloud that he shares with his family and friends. What is happening to the signals during this process?

Analog signals are being converted to digital signals so that they can be combined, altered, and shared.

The signals remain analog throughout the entire process. Both the music and computer work can be done with analog.

The signals remain digital throughout the entire process. Both the music and computer work can be done with digital.

Digital signals are being converted to analog signals so that they can be combined, altered, and shared.

A sound engineer 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

digital, because it is a continuous signal with infinite values, and 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 discrete signal made up of ones and zeroes, and noise is blended in

WAVES & INFO. TECHNOLOGIES

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS4-3, MS-PS4-1, MS-PS4-2

+1

Standards-aligned

Andrew Niswander

Used 6+ times

FREE Resource

digital signal

electrical circuit

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

33 questions

Life Sciences 8 Midterm Review

Quiz

•

6th - 8th Grade

32 questions

Brainpop: Simple Machines

Quiz

•

6th - 8th Grade

38 questions

Genetics and Punnett Squares

Quiz

•

7th - 8th Grade

30 questions

Unit 8 Electricity and Magnetism Test Review

Quiz

•

8th Grade

32 questions

Light Technology

Quiz

•

7th - 9th Grade

37 questions

(C8) Learning Set #2 quiz prep

Quiz

•

8th Grade

36 questions

PHSC Quiz -Week 12 - Ch 6, 7, 8, & 10

Quiz

•

8th - 11th Grade

37 questions

KS3 Space - Keywords

Quiz

•

6th - 9th Grade

Popular Resources on Wayground

15 questions

Fractions on a Number Line

Quiz

•

3rd Grade

20 questions

Equivalent Fractions

Quiz

•

3rd Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

54 questions

Analyzing Line Graphs & Tables

Quiz

•

4th Grade

$fractions$

22 questions

fractions

Quiz

•

3rd Grade

20 questions

Main Idea and Details

Quiz

•

5th Grade

20 questions

Context Clues

Quiz

•

6th Grade

15 questions

Equivalent Fractions

Quiz

•

4th Grade

Discover more resources for Science

20 questions

Cell Organelles and Functions

Quiz

•

6th - 8th Grade

33 questions

Grade 6 Quarter 3 PMA 5 Review

Quiz

•

6th - 8th Grade

10 questions

Exploring the Rock Cycle: Types and Formation

Interactive video

•

6th - 8th Grade

10 questions

Exploring the Layers of the Earth

Interactive video

•

6th - 10th Grade

14 questions

Biodiversity and Sustainability Quiz

Quiz

•

8th Grade

20 questions

Heredity Punnett square review

Quiz

•

8th Grade

23 questions

Newton's 3 Laws of Motion

Quiz

•

8th Grade

10 questions

Exploring the Rock Cycle

Interactive video

•

6th - 8th Grade

WAVES & INFO. TECHNOLOGIES

35 questions

A complete, unbroken path through which electric charges can flow.

The difference in electrical potential energy per charge between two places in a circuit.

The measurement of how difficult it is for charges to flow through an object.

The law that states the resistance in a circuit is equal to voltage divided by current.

An electric circuit in which all parts are connected one after another along one path.

An electric circuit in which different parts of the circuit are on separate branches.

A disturbance that transfers energy from place to place.

A wave that requires a medium through which to travel.

A wave that moves the medium at right angles to the direction in which the wave travels.

A wave that moves the medium in a direction parallel to the direction in which the wave travels.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science