Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 518 · 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.True or false: yeast is not needed for the shadow clock. (a) False (b) True
2. 2.🧺 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 magnet (d) a clock to check
3. 3.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) butter paper (b) oily paper (c) frosted glass (d) a brick
6. 6.True or false: a brick is translucent. (a) False (b) True
7. 7.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) up (c) west (d) north
8. 8.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) late evening (d) at night
9. 9.🔦 Which of these is transparent? (a) oily paper (b) a brick (c) a book (d) clear plastic film
10. 10.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a balloon (d) a straight stick
11. 11.True or false: a mirror is needed for the shadow clock. (a) True (b) False
12. 12.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a balloon (d) a straight stick
13. 13.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
14. 14.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
15. 15.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
16. 16.🧺 Which of these is not needed for the shadow clock? (a) a mirror (b) a clock to check (c) a sunny open place (d) a straight stick
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
19. 19.True or false: a wooden board is opaque. (a) False (b) True
20. 20.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
21. 21.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) chalk to mark shadows (d) a magnet
22. 22.True or false: tissue paper is transparent. (a) True (b) False
23. 23.⚖️ 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 spot (c) shadow length
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.⚖️ 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
26. 26.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) wear a cap (d) look straight at the Sun
27. 27.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) turmeric powder
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 stick kept upright (c) the time of day (d) the same spot
29. 29.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
30. 30.True or false: a book is transparent. (a) False (b) True
31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
32. 32.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
33. 33.⚖️ 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) shadow length (c) the time of day
34. 34.🕰️ What is a sundial used for? (a) measuring rain (b) telling the time (c) making rainbows (d) weighing things
35. 35.True or false: your hand is opaque. (a) False (b) True
36. 36.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
37. 37.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a straight stick (d) a clock to check
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Which of these is not needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a clock to check (d) a sunny open place
40. 40.True or false: a wooden board is transparent. (a) False (b) True

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