Grade 4 Science And Technology – Digital devices Quiz

1. what is a digital device?

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

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

tablet
smart phone
a horn for communication
smart watch
Explanation:

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

mouse
RAM
screen
keyboard
Explanation:

4. a laptop has the following except?

touch pad
screen
cables
external CPU
Explanation:

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

screen
touchpad
keyboard
mouse
Explanation:

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

symbols
numbers
letters
on and off buttons
Explanation:

7. what is the function of a keyboard?

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

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

mouse
CPU
touch pad
screen
Explanation:

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

CPU
mouse
screen
cables
Explanation:

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

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

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

central processing unit
keyboard
mouse/touch pad
monitor
Explanation:

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

monitor
screen
power source
central processing unit
Explanation:

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

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

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

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

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

smart phone
television
radio
desktop
Explanation:

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

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

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

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

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

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

19. what is coding?

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

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

temple run
hand written homework
crosswords
car racing games
Explanation:

21. What is the main function of a smartphone?

Cooking dinner
Riding a bicycle
Making phone calls
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?

Camera
Refrigerator
Television
Microwave
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?

Frying pan
Music player
Toaster
Calculator
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?

Chair
Laptop
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?

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
Airplane
Tablet
Smartphone
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?

Dishwasher
Gaming console
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
Bookshelf
Screwdriver
E-reader
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?

Iron
Vacuum cleaner
Mixer
Streaming device
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?

Dish rack
Fitness tracker
Hammer
Oven
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?

Microwave
Refrigerator
Laptop
Television
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
Cooking food
Washing clothes
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?

Typewriter
Printer
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?

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?

Fan
Iron box
Headphones
Vacuum cleaner
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?

Playing video games
Taking pictures
Cooking food
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?

Blender
Router
Microwave
Toaster
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?

Cooking food
Driving a car
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
Table lamp
Electric kettle
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
Playing music
Telling time
Cooking food
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?

Mixing bowl
Coffee maker
Pressure cooker
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?

Cooking food recipes
Listening to music
Playing chess
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
Hairdryer
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
Playing music
Setting alarms
Cooking meals
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?

Coffee machine
Washing machine
Air purifier
Camera drone
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?

Watching cartoons
Playing football
Recording audio
Baking cakes
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?

Videos
Photos
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?

Electric fan
External hard drive
Refrigerator
Sewing machine
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?

Streaming videos
Grilling meat
Playing tennis
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?

Juicer
Mop
Ceiling fan
Graphics tablet
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
Watching movies
Cooking recipes
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?

Heater
Bluetooth speaker
Television
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
Capturing videos
Listening to music
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
Walkie-talkie
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?

Watching TV shows
Painting walls
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?

Air conditioner
Drawing tablet
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.