Shadow and Sundial Experiment Worksheet

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

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