Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 723 · 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 of these is transparent? (a) your hand (b) clear glass (c) tissue paper (d) butter paper
2. 2.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
3. 3.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) mark with chalk (d) wear a cap
4. 4.True or false: a wooden board is transparent. (a) True (b) False
5. 5.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
6. 6.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
7. 7.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
8. 8.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
9. 9.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
10. 10.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
11. 11.🧺 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
12. 12.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) yeast (c) a sunny open place (d) a clock to check
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) False (b) True
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a battery cell (c) chalk to mark shadows (d) a sunny open place
16. 16.True or false: butter paper is translucent. (a) True (b) False
17. 17.⚖️ 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 time of day (d) the same spot
18. 18.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) your hand (b) a brick (c) oily paper (d) a wooden board
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the time of day (c) the same stick
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same spot (c) the time of day
22. 22.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) brighter (d) coloured
23. 23.🧺 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 clock to check (d) a balloon
24. 24.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
25. 25.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the time of day (c) the same spot (d) shadow length
27. 27.True or false: a balloon is needed for the shadow clock. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a balloon (d) a mirror
30. 30.True or false: a wooden board is opaque. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) air (b) clear glass (c) clean water (d) frosted glass
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
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.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a clock to check (d) a mirror
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) a sunny open place (d) a clock to check
39. 39.True or false: a brick is opaque. (a) True (b) False
40. 40.🔦 Which of these is transparent? (a) a wooden board (b) butter paper (c) a steel plate (d) air

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