Grade 4 Science And Technology – Digital devices Quiz

1. what is a digital device?

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

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

a horn for communication
smart phone
smart watch
tablet
Explanation:

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

RAM
mouse
keyboard
screen
Explanation:

4. a laptop has the following except?

external CPU
touch pad
cables
screen
Explanation:

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

touchpad
screen
keyboard
mouse
Explanation:

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

letters
on and off buttons
symbols
numbers
Explanation:

7. what is the function of a keyboard?

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

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

mouse
touch pad
screen
CPU
Explanation:

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

screen
mouse
cables
CPU
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?

mouse/touch pad
keyboard
central processing unit
monitor
Explanation:

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

central processing unit
power source
monitor
screen
Explanation:

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

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

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

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

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

desktop
smart phone
television
radio
Explanation:

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

these devices are destroyed by spillages from foods and drinks
we can be choked
we cannot multitask
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
to avoid an electric shock
not to misuse water
Explanation:

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

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

19. what is coding?

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

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

crosswords
temple run
hand written homework
car racing games
Explanation:

21. What is the main function of a smartphone?

Playing music
Cooking dinner
Making phone calls
Riding a bicycle
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?

Refrigerator
Camera
Microwave
Television
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
Umbrella
Spoon
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?

Smartwatch
Washing machine
Cooker
Tablet
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?

Smartphone
Digital camera
Tablet
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?

Fridge
Gaming console
Blender
Dishwasher
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?

Streaming device
Vacuum cleaner
Mixer
Iron
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?

Fitness tracker
Hammer
Oven
Dish rack
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
Refrigerator
Microwave
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?

Cooking food
Washing clothes
Making calls
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?

Calculator
Printer
Typewriter
Computer
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?

Watching TV
Taking notes
Cooking recipes
Playing outdoor games
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?

Vacuum cleaner
Fan
Headphones
Iron box
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?

Cooking food
Taking pictures
Playing video games
Watching movies
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?

Microwave
Router
Toaster
Blender
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?

Playing football
Driving a car
Sending messages
Cooking food
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?

Electric kettle
Game console
Table lamp
Vacuum cleaner
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
Mixing bowl
Coffee maker
Smart speaker
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?

Watching TV shows
Playing chess
Cooking food recipes
Listening to music
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?

Hairdryer
E-reader
Oven
Bookshelf
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?

Washing machine
Coffee machine
Camera drone
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?

Playing football
Baking cakes
Recording audio
Watching cartoons
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?

GPS device
Toaster
Rice cooker
Iron box
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
Temperature
Recipes
Videos
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?

Electric fan
Sewing machine
External hard drive
Refrigerator
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
Washing dishes
Streaming videos
Grilling meat
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?

Ceiling fan
Graphics tablet
Mop
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?

Tracking fitness activities
Watching movies
Cooking recipes
Playing games
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
Food processor
Heater
Bluetooth speaker
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
Listening to music
Capturing videos
Ironing clothes
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?

Radio receiver
Fridge
Hair straightener
Walkie-talkie
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?

Painting walls
Watching TV shows
Cooking meals
Measuring weight
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
Dishwasher
Air conditioner
Vacuum sealer
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.