Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 70 · 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 is the odd one out? (a) a wooden board (b) a brick (c) clear glass (d) a steel plate
2. 2.True or false: air is transparent. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) frosted glass (b) air (c) butter paper (d) tissue paper
4. 4.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a magnet
5. 5.🧺 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 clock to check (d) a battery cell
6. 6.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade
7. 7.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
8. 8.⚖️ 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) True (b) False
9. 9.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
10. 10.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a battery cell (d) a straight stick
12. 12.True or false: yeast is not needed for the shadow clock. (a) True (b) False
13. 13.🧺 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) turmeric powder (d) chalk to mark shadows
14. 14.🔦 Is clear plastic film opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
15. 15.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
16. 16.🛟 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
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
18. 18.True or false: a steel plate is translucent. (a) True (b) False
19. 19.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) a book (d) oily paper
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same stick (c) shadow length (d) the time of day
22. 22.🧺 Which of these is needed for the shadow clock? (a) a sunny open place (b) a battery cell (c) a mirror (d) turmeric powder
23. 23.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
24. 24.🌞 When is a stick’s shadow the shortest? (a) late evening (b) early morning (c) at night (d) around noon
25. 25.🔦 Which of these is translucent? (a) clean water (b) air (c) butter paper (d) your hand
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a balloon (d) chalk to mark shadows
29. 29.True or false: a mirror is needed for the shadow clock. (a) True (b) False
30. 30.🔦 Which of these is transparent? (a) a brick (b) a wooden board (c) a book (d) clean water
31. 31.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.⚖️ 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 same stick (c) the stick kept upright (d) the time of day
34. 34.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
35. 35.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) runs faster (d) shows two times
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) True (b) False
37. 37.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) brighter (d) smaller
38. 38.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
39. 39.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a mirror (c) a magnet (d) a straight stick
40. 40.True or false: a magnet is needed for the shadow clock. (a) True (b) False

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