Graphic Design Worksheet: Pixels and Image Size

Animation and design lesson 14: Pixels and image size · Set 294 · 40 questions

Creator's tip (Width times height): Pixels = width × height; megapixels = pixels ÷ 1000000. Aspect ratio = width : height. 16:9 wide, 4:3 squarer, 1:1 square, 9:16 tall. Keep the ratio: a 16:9 frame 1920 pixels wide is 1920 ÷ 16 × 9 = 1080 tall. Printing: inches × pixels per inch.

1. 1.🟦 You shrink a 680 × 400 pixel image to half its width and half its height. How many pixels does it have now?
2. 2.🟦 A 16:9 video frame is 800 pixels wide. How many pixels tall is it?
3. 3.🟦 You shrink a 540 × 380 pixel image to half its width and half its height. How many pixels does it have now?
4. 4.🟦 What is a pixel? (a) a sound (b) a type of paper (c) a font size (d) a tiny dot of colour
5. 5.Which of these best fits 4:3? (a) a widescreen TV (b) an album cover (c) an old-style monitor (d) an upright phone screen
6. 6.🟦 You shrink a 140 × 620 pixel image to half its width and half its height. How many pixels does it have now?
7. 7.🟦 You shrink a 420 × 520 pixel image to half its width and half its height. How many pixels does it have now?
8. 8.🟦 A 16:9 frame is … (a) round (b) a perfect square (c) wider than it is tall (d) taller than wide
9. 9.Which of these best fits 9:16? (a) a tall phone video (b) an older TV screen (c) a widescreen TV (d) a landscape video
10. 10.🟦 Which aspect ratio best fits a widescreen slide? (a) 9:16 (b) 4:3 (c) 1:1 (d) 16:9
11. 11.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for a 9-inch-wide print?
12. 12.🟦 Zooming in a lot on a small photo makes it look … (a) longer (b) louder (c) blocky (pixelated) (d) sharper
13. 13.🟦 An image is 120 pixels wide and 160 pixels tall. How many pixels does it have in all?
14. 14.🟦 You shrink a 40 × 700 pixel image to half its width and half its height. How many pixels does it have now?
15. 15.🟦 You shrink a 620 × 780 pixel image to half its width and half its height. How many pixels does it have now?
16. 16.🟦 You shrink a 580 × 160 pixel image to half its width and half its height. How many pixels does it have now?
17. 17.🟦 An image is 210 pixels wide and 20 pixels tall. How many pixels does it have in all?
18. 18.🟦 An image is 20 pixels wide and 60 pixels tall. How many pixels does it have in all?
19. 19.🟦 An image is 260 pixels wide and 110 pixels tall. How many pixels does it have in all?
20. 20.Which of these best fits 4:3? (a) a classic tablet screen (b) a landscape video (c) a laptop film screen (d) a square sticker
21. 21.🟦 Stretching a photo only sideways makes people look … (a) more colourful (b) exactly the same (c) squashed or wide (d) sharper
22. 22.🟦 A 16:9 video frame is 1530 pixels tall. How many pixels wide is it?
23. 23.🟦 A photo is 6000 × 3500 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
24. 24.🟦 A photo is 5000 × 1000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
25. 25.🟦 A 16:9 video frame is 480 pixels wide. How many pixels tall is it?
26. 26.🟦 An image is 720 × 480 pixels. What is its aspect ratio? (a) 4:3 (b) 3:2 (c) 1:1 (d) 16:9
27. 27.🟦 An image is 180 pixels wide and 330 pixels tall. How many pixels does it have in all?
28. 28.🟦 Which aspect ratio best fits an album cover? (a) 9:16 (b) 4:3 (c) 1:1 (d) 16:9
29. 29.🟦 An image is 130 pixels wide and 30 pixels tall. How many pixels does it have in all?
30. 30.Which of these best fits 16:9? (a) a tall phone video (b) a widescreen TV (c) an old-style monitor (d) a square profile picture
31. 31.🟦 An image is 230 pixels wide and 70 pixels tall. How many pixels does it have in all?
32. 32.🟦 To print sharply at 300 pixels per inch, how many pixels wide must a photo be for an 11-inch-wide print?
33. 33.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for an 8-inch-wide print?
34. 34.🟦 You shrink a 120 × 520 pixel image to half its width and half its height. How many pixels does it have now?
35. 35.🟦 An image is 340 pixels wide and 100 pixels tall. How many pixels does it have in all?
36. 36.🟦 An image is 570 × 380 pixels. What is its aspect ratio? (a) 3:2 (b) 1:1 (c) 4:3 (d) 16:9
37. 37.Which of these best fits 16:9? (a) a widescreen slide (b) a square post (c) an older TV screen (d) an upright phone screen
38. 38.Which of these best fits 9:16? (a) an upright phone screen (b) a landscape video (c) a widescreen slide (d) a classic tablet screen
39. 39.🟦 A 4:3 video frame is 510 pixels tall. How many pixels wide is it?
40. 40.🟦 Which aspect ratio best fits a landscape video? (a) 4:3 (b) 9:16 (c) 16:9 (d) 1:1

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