Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 682 · 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.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
2. 2.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
3. 3.⚖️ 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) False (b) True
4. 4.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) clear plastic film (d) a book
5. 5.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
6. 6.True or false: clear plastic film is translucent. (a) True (b) False
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🔦 Which of these is translucent? (a) a book (b) a brick (c) oily paper (d) a steel plate
9. 9.⚖️ 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
10. 10.⚖️ 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) False (b) True
11. 11.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
13. 13.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) chalk to mark shadows (d) a mirror
14. 14.🧺 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) a magnet
15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
16. 16.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) coloured (c) smaller (d) brighter
17. 17.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
18. 18.🧺 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) a balloon (d) chalk to mark shadows
19. 19.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
20. 20.🔍 Which is the odd one out? (a) oily paper (b) a wooden board (c) butter paper (d) tissue paper
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) yeast (d) a clock to check
22. 22.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) around noon (d) late evening
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) shadow length (c) the stick kept upright (d) the same spot
24. 24.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a balloon (c) a sunny open place (d) turmeric powder
25. 25.True or false: a book is translucent. (a) True (b) False
26. 26.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
27. 27.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
28. 28.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
29. 29.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
30. 30.True or false: a brick is opaque. (a) False (b) True
31. 31.🧺 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 sunny open place
32. 32.⚖️ 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 same stick
33. 33.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) a raincoat (d) nothing on your head
34. 34.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
35. 35.True or false: a brick is translucent. (a) True (b) False
36. 36.⚖️ 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 spot (b) shadow length (c) the stick kept upright (d) the time of day
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.True or false: a magnet is needed for the shadow clock. (a) False (b) True
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.⚖️ 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

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