Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 429 · 40 questions

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

1. 1.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a mirror (d) a clock to check
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
5. 5.True or false: your hand is translucent. (a) True (b) False
6. 6.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) a sunny open place (d) a battery cell
7. 7.True or false: yeast is needed for the shadow clock. (a) True (b) False
8. 8.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🔦 Which of these is translucent? (a) a brick (b) frosted glass (c) your hand (d) clean water
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) yeast (c) a sunny open place (d) a straight stick
16. 16.True or false: a brick is transparent. (a) False (b) True
17. 17.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) a balloon
18. 18.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
19. 19.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
20. 20.True or false: air is transparent. (a) False (b) True
21. 21.True or false: a magnet is needed for the shadow clock. (a) True (b) False
22. 22.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) butter paper (b) clear plastic film (c) tissue paper (d) oily paper
25. 25.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
26. 26.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) a cap or hat (d) nothing on your head
27. 27.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) making rainbows (d) telling the time
28. 28.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a magnet (d) chalk to mark shadows
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
30. 30.🔍 Which is the odd one out? (a) tissue paper (b) clear glass (c) butter paper (d) oily paper
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same stick (b) the time of day (c) shadow length (d) the stick kept upright
32. 32.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
33. 33.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
34. 34.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
35. 35.True or false: clear plastic film is opaque. (a) False (b) True
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
37. 37.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
38. 38.🔦 Which of these is transparent? (a) a book (b) clear plastic film (c) frosted glass (d) butter paper
39. 39.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a magnet (d) a clock to check
40. 40.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides

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