Grade 4 Science And Technology – Digital devices Quiz

1. what is a digital device?

a computer
computer -like object that is used for collection, storage and display of information
a phone
a machine
Explanation:

2. which one of the following is not a digital device?

tablet
a horn for communication
smart phone
smart watch
Explanation:

3. the following are external parts of a computer. which is the odd one out?

screen
keyboard
RAM
mouse
Explanation:

4. a laptop has the following except?

touch pad
screen
external CPU
cables
Explanation:

5. - is not found in both desktop and laptop.

screen
keyboard
touchpad
mouse
Explanation:

6. three of the following are found in a keyboard. which one is not?

on and off buttons
letters
numbers
symbols
Explanation:

7. what is the function of a keyboard?

storing fed information in a computer
switching the computer on and off
making the computer beautiful
keying or typing information into a computer
Explanation:

8. where is the information stored in a computer dispalayed?

touch pad
mouse
screen
CPU
Explanation:

9. What part of a computer encloses the interior components?

cables
CPU
screen
mouse
Explanation:

10. what is the function of cables in digital devices?

saving keyed information
connection to the power source
covering interior components
displaying stored information
Explanation:

11. what part/component of a computer enables one to point something?

monitor
central processing unit
mouse/touch pad
keyboard
Explanation:

12. where are the mouse, monitor and keyboard connected in a desktop?

screen
power source
monitor
central processing unit
Explanation:

13. which parts of a computer are connected to the power source?

all the components
keyboard and mouse
screen and mouse
CPU and monitor
Explanation:

14. why are smart phones, laptops and tablets connected to power?

putting information in them
for charging
heating them
keeping them for long
Explanation:

15. the following devices cannot work without being connected to the power source. which one is not?

desktop
television
smart phone
radio
Explanation:

16. why should we avoid eating and drinking while holding digital devices?

we cannot multitask
we can be choked
these devices are destroyed by spillages from foods and drinks
the food will not be sweet
Explanation:

17. why are we advised not to hold cables and sockets with we hands?

to protect our hands from cold
avoid getting sick
not to misuse water
to avoid an electric shock
Explanation:

18. which one of the following is not a proper use of the digital devices?

switching off the devices after use and when not n use
use well insulated cables always
using naked cable to connect the devices to power source
drying hands before touching cables and sockets
Explanation:

19. what is coding?

protecting information in a computer
joining picture and symbols in a computer
use of letters, symbols, pictures or words to present something else?
playing with numbers in a computer
Explanation:

20. which one of h following is not a coded pattern?

car racing games
crosswords
hand written homework
temple run
Explanation:

21. What is the main function of a smartphone?

Cooking dinner
Making phone calls
Riding a bicycle
Playing music
Explanation:

A smartphone is primarily used for making phone calls, in addition to other functions like texting, browsing the internet, and taking pictures.

22. Which of the following is a digital device used for taking pictures?

Television
Microwave
Camera
Refrigerator
Explanation:

A camera is a digital device specifically used for taking pictures and recording videos.

23. What is a common digital device used for listening to music?

Calculator
Toaster
Frying pan
Music player
Explanation:

A music player is a digital device designed for playing audio files, allowing users to listen to music.

24. Which device is primarily used for accessing the internet?

Laptop
Chair
Spoon
Umbrella
Explanation:

A laptop is a portable computer device commonly used for accessing the internet, browsing websites, and performing various tasks.

25. What is a digital device used for sending text messages?

Tablet
Cooker
Smartwatch
Washing machine
Explanation:

A smartwatch is a digital device that can send text messages, receive notifications, and perform other functions when connected to a smartphone.

26. Which of the following is not a digital device?

Digital camera
Tablet
Smartphone
Airplane
Explanation:

An airplane is a mode of transportation and not a digital device, while the other options are digital devices used for various purposes.

27. What digital device is commonly used for playing video games?

Gaming console
Dishwasher
Blender
Fridge
Explanation:

A gaming console is a digital device designed specifically for playing video games, offering a dedicated gaming experience.

28. Which device is used for reading electronic books?

Stove
Screwdriver
E-reader
Bookshelf
Explanation:

An e-reader is a digital device that allows users to read electronic books, also known as e-books, in a convenient and portable format.

29. What is a common digital device used for watching movies and TV shows?

Mixer
Streaming device
Iron
Vacuum cleaner
Explanation:

A streaming device is a digital device that connects to a TV and allows users to watch movies and TV shows from online streaming services.

30. Which device is used for tracking physical activity and health data?

Hammer
Dish rack
Oven
Fitness tracker
Explanation:

A fitness tracker is a digital device worn on the wrist that monitors physical activity, heart rate, and other health data to help users stay active and healthy.

31. Which of the following is a digital device?

Television
Laptop
Microwave
Refrigerator
Explanation:

A laptop is a digital device because it is able to process and store data electronically.

32. What is the function of a smartphone?

Making calls
Washing clothes
Cooking food
Playing games
Explanation:

One of the main functions of a smartphone is to make calls to communicate with others.

33. Which device is used for typing documents digitally?

Printer
Typewriter
Computer
Calculator
Explanation:

A computer is used for typing and editing documents digitally, unlike a typewriter which is a mechanical device.

34. What can a digital tablet be used for?

Playing outdoor games
Cooking recipes
Taking notes
Watching TV
Explanation:

A digital tablet can be used for taking notes, drawing, and other tasks that involve digital input.

35. Which digital device is used for listening to music?

Fan
Vacuum cleaner
Iron box
Headphones
Explanation:

Headphones are digital devices that are used to listen to music from smartphones, computers, and other audio devices.

36. What is the main function of a digital camera?

Taking pictures
Cooking food
Watching movies
Playing video games
Explanation:

The main function of a digital camera is to capture and store images electronically without the need for film.

37. Which device can be used for accessing the internet wirelessly?

Blender
Toaster
Router
Microwave
Explanation:

A router is a digital device that connects multiple devices to the internet wirelessly through Wi-Fi.

38. What can a smartwatch be used for?

Driving a car
Cooking food
Playing football
Sending messages
Explanation:

A smartwatch can be used to send messages, receive notifications, track fitness activities, and perform other smart functions.

39. Which digital device is used for playing video games?

Game console
Vacuum cleaner
Electric kettle
Table lamp
Explanation:

A game console is a dedicated digital device used for playing video games on a television or monitor.

40. What is the purpose of a digital clock?

Watching movies
Cooking food
Telling time
Playing music
Explanation:

A digital clock displays the current time digitally, making it easier for people to keep track of time.

41. Which device can be used to search for information on the internet?

Pressure cooker
Smart speaker
Mixing bowl
Coffee maker
Explanation:

A smart speaker can be used to search for information on the internet using voice commands, making it a useful digital device for information retrieval.

42. What is the main function of a digital audio player?

Playing chess
Cooking food recipes
Listening to music
Watching TV shows
Explanation:

A digital audio player, like an iPod, is used for storing and playing music digitally, allowing users to listen to their favorite songs on the go.

43. Which device can be used for viewing digital books?

E-reader
Oven
Bookshelf
Hairdryer
Explanation:

An e-reader is a digital device specifically designed for reading digital books or e-books, offering a more convenient way to carry and access reading material.

44. What is the function of a digital alarm clock?

Washing clothes
Cooking meals
Playing music
Setting alarms
Explanation:

The main function of a digital alarm clock is to set alarms and wake people up at specific times by playing an alarm sound.

45. Which digital device can be used for taking photos and videos?

Camera drone
Coffee machine
Washing machine
Air purifier
Explanation:

A camera drone is a digital device equipped with a camera for capturing photos and videos from aerial perspectives, making it a popular choice for photography and videography.

46. What is the primary function of a digital voice recorder?

Baking cakes
Playing football
Watching cartoons
Recording audio
Explanation:

A digital voice recorder is used for capturing and storing audio recordings, making it useful for dictation, lectures, interviews, and music recording.

47. Which device can be used for viewing digital maps and navigation?

Iron box
Rice cooker
GPS device
Toaster
Explanation:

A GPS device is a digital navigation tool commonly used for viewing digital maps, getting directions, and tracking locations while driving or hiking.

48. What can a digital photo frame display?

Photos
Videos
Temperature
Recipes
Explanation:

A digital photo frame is designed to display digital photos in a slideshow format, providing a modern way to showcase and enjoy personal memories.

49. Which device is used for storing digital files and documents?

Sewing machine
Electric fan
Refrigerator
External hard drive
Explanation:

An external hard drive is a digital storage device used for storing large amounts of digital files, such as documents, photos, videos, and music.

50. What is the main function of a digital smart TV?

Playing tennis
Grilling meat
Streaming videos
Washing dishes
Explanation:

A digital smart TV allows users to stream online videos, access apps, play games, and browse the internet, offering a more interactive entertainment experience.

51. Which device can be used for editing digital photos and videos?

Graphics tablet
Mop
Ceiling fan
Juicer
Explanation:

A graphics tablet is a digital input device that allows users to draw, sketch, paint, and edit photos and videos with precision using a stylus or pen.

52. What is the purpose of a digital fitness tracker?

Playing games
Tracking fitness activities
Cooking recipes
Watching movies
Explanation:

A digital fitness tracker is designed to monitor and track fitness activities, such as steps taken, calories burned, heart rate, and sleep quality, helping users stay active and healthy.

53. Which device can be used for playing digital music wirelessly?

Television
Heater
Bluetooth speaker
Food processor
Explanation:

A Bluetooth speaker is a wireless digital device that can connect to smartphones, tablets, or computers to play digital music or audio files with high-quality sound.

54. What is the main function of a digital video camera?

Cooking food
Ironing clothes
Listening to music
Capturing videos
Explanation:

A digital video camera is used for recording, capturing, and storing videos digitally, making it ideal for filming events, making movies, and creating content for online platforms.

55. Which device is used for playing digital radio stations?

Walkie-talkie
Fridge
Radio receiver
Hair straightener
Explanation:

A radio receiver is a digital device that can tune in to digital radio stations and play music or audio programs with the help of headphones or speakers.

56. What can a digital scale be used for?

Measuring weight
Watching TV shows
Cooking meals
Painting walls
Explanation:

A digital scale is used for accurately measuring weight in grams, kilograms, or pounds, making it helpful for monitoring food portions, ingredients, or personal weight.

57. Which device can be used for drawing and sketching digitally?

Drawing tablet
Air conditioner
Vacuum sealer
Dishwasher
Explanation:

A drawing tablet is a digital input device that allows artists, designers, and users to draw, sketch, and create digital artwork using a stylus or pen with various pressure levels.

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