Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 12 · 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.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) chalk to mark shadows (c) a balloon (d) turmeric powder
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the time of day (b) the same stick (c) shadow length
3. 3.🔦 Which of these is translucent? (a) clean water (b) a brick (c) tissue paper (d) clear glass
4. 4.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) yeast (c) turmeric powder (d) a battery cell
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
6. 6.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
7. 7.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) a balloon (d) a mirror
8. 8.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a woollen sweater (d) a raincoat
9. 9.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a straight stick (d) a balloon
10. 10.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
11. 11.🔍 Which is the odd one out? (a) air (b) a brick (c) clean water (d) clear glass
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the time of day (c) the same spot (d) the stick kept upright
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) a magnet
14. 14.🔦 Which of these is opaque? (a) clear plastic film (b) a book (c) air (d) oily paper
15. 15.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
16. 16.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) sit in the shade (d) wear a cap
17. 17.True or false: yeast is needed for the shadow clock. (a) False (b) True
18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) a battery cell
21. 21.True or false: a mirror is needed for the shadow clock. (a) True (b) False
22. 22.🔦 Which of these is opaque? (a) clean water (b) clear plastic film (c) clear glass (d) your hand
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
25. 25.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
26. 26.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
27. 27.🔦 Which of these is transparent? (a) a book (b) air (c) frosted glass (d) your hand
28. 28.🔍 Which is the odd one out? (a) air (b) clear plastic film (c) clean water (d) a steel plate
29. 29.True or false: clean water is transparent. (a) False (b) True
30. 30.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the same stick (d) the stick kept upright
33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) long (d) missing
34. 34.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
35. 35.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) yeast
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
37. 37.🧺 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) yeast (d) a straight stick
38. 38.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) your hand (d) butter paper
39. 39.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
40. 40.True or false: tissue paper is translucent. (a) False (b) True

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