App Dev Worksheet: Accessibility

App development lesson 13: Accessibility · Set 670 · 40 questions

Developer's tip (Design for everyone): Our rule: text is at least 16 px; every icon has a text label for screen readers. Add captions to videos; never use colour as the only clue. Big touch targets and strong contrast help everyone.

1. 1.♿ Accessibility means an app works for ___. (a) only the coder (b) nobody (c) only experts (d) everyone
2. 2.♿ Does this help everyone, or make the app harder to use: icons with no labels? (a) makes it harder (b) helps everyone
3. 3.♿ Why add captions to videos? (a) to hide the sound (b) to slow them down (c) so anyone can follow (d) to add colour
4. 4.♿ A screen has 11 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
5. 5.♿ Does this help everyone, or make the app harder to use: labels on every icon? (a) makes it harder (b) helps everyone
6. 6.Which of these makes the app harder to use? (a) captions on videos (b) strong colour contrast (c) labels on every icon (d) colour as the only clue
7. 7.🔍 Which is the odd one out? (a) captions on videos (b) text that can grow (c) icons with no labels (d) strong colour contrast
8. 8.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Footer: 21 px
   Hint: 17 px
   Body text: 12 px (a) Body text (b) Footer (c) Hint
9. 9.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
   Hint: 28 px
   Title: 26 px
   Caption: 13 px
   Menu: 28 px (a) Hint (b) Caption (c) Title (d) Menu
10. 10.♿ Does this help everyone, or make the app harder to use: captions on videos? (a) helps everyone (b) makes it harder
11. 11.Which of these makes the app harder to use? (a) labels on every icon (b) strong colour contrast (c) text that can grow (d) sudden loud sounds
12. 12.True or false: “icons with no labels” helps everyone use the app. (a) True (b) False
13. 13.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Label: 17 px
    Body text: 24 px
    Title: 19 px
14. 14.Which of these helps everyone use the app? (a) big touch targets (b) tiny tap areas (c) colour as the only clue (d) sudden loud sounds
15. 15.Which of these helps everyone use the app? (a) icons with no labels (b) tiny tap areas (c) labels on every icon (d) sudden loud sounds
16. 16.🔍 Which is the odd one out? (a) fast-flashing lights (b) icons with no labels (c) colour as the only clue (d) text that can grow
17. 17.♿ Showing right or wrong only in red and green is a problem for ___. (a) the server (b) the battery (c) colour-blind users (d) fast typists
18. 18.Which of these helps everyone use the app? (a) colour as the only clue (b) icons with no labels (c) strong colour contrast (d) fast-flashing lights
19. 19.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 21 px
    Footer: 17 px
    Hint: 22 px
    Label: 23 px
    Body text: 13 px (a) Body text (b) Caption (c) Hint (d) Footer
20. 20.Which of these makes the app harder to use? (a) text that can grow (b) labels on every icon (c) captions on videos (d) tiny tap areas
21. 21.Which of these helps everyone use the app? (a) colour as the only clue (b) sudden loud sounds (c) text that can grow (d) icons with no labels
22. 22.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Caption: 15 px
    Label: 18 px
    Menu: 20 px
23. 23.♿ A screen has 6 icon buttons. Only 1 of them have a text label for screen readers. How many still need a label?
24. 24.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 28 px
    Hint: 10 px
    Title: 17 px (a) Caption (b) Title (c) Hint
25. 25.Which of these helps everyone use the app? (a) icons with no labels (b) colour as the only clue (c) sudden loud sounds (d) captions on videos
26. 26.True or false: “fast-flashing lights” helps everyone use the app. (a) False (b) True
27. 27.♿ Our rule: text is at least 16 px. How many texts on this screen are too small?
    Title: 10 px
    Menu: 22 px
    Hint: 22 px
    Label: 22 px
    Footer: 11 px
28. 28.♿ Does this help everyone, or make the app harder to use: sudden loud sounds? (a) helps everyone (b) makes it harder
29. 29.True or false: “colour as the only clue” makes the app harder to use. (a) True (b) False
30. 30.True or false: “captions on videos” makes the app harder to use. (a) False (b) True
31. 31.♿ What does a screen reader do? (a) makes text tiny (b) takes photos (c) plays music (d) reads the screen aloud
32. 32.True or false: “big touch targets” helps everyone use the app. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) big touch targets (b) fast-flashing lights (c) strong colour contrast (d) captions on videos
34. 34.♿ A screen has 6 icon buttons. Only 2 of them have a text label for screen readers. How many still need a label?
35. 35.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Caption: 21 px
    Hint: 23 px
    Title: 16 px
    Footer: 11 px (a) Title (b) Footer (c) Caption (d) Hint
36. 36.♿ Does this help everyone, or make the app harder to use: strong colour contrast? (a) helps everyone (b) makes it harder
37. 37.♿ A screen has 10 icon buttons. Only 7 of them have a text label for screen readers. How many still need a label?
38. 38.🔍 Which is the odd one out? (a) fast-flashing lights (b) sudden loud sounds (c) tiny tap areas (d) big touch targets
39. 39.♿ Does this help everyone, or make the app harder to use: colour as the only clue? (a) helps everyone (b) makes it harder
40. 40.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Body text: 18 px
    Footer: 12 px
    Hint: 19 px (a) Hint (b) Body text (c) Footer

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students