Shadow and Sundial Experiment Worksheet

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

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