Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 220 · 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 is the odd one out? (a) tissue paper (b) oily paper (c) butter paper (d) a wooden board
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a magnet (d) a sunny open place
3. 3.🌞 When is a stick’s shadow the shortest? (a) around noon (b) late evening (c) early morning (d) at night
4. 4.🛟 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
5. 5.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a balloon (c) turmeric powder (d) a sunny open place
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a straight stick (d) a clock to check
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
10. 10.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a clock to check (d) a battery cell
11. 11.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
12. 12.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
13. 13.True or false: frosted glass is opaque. (a) True (b) False
14. 14.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a woollen sweater (c) nothing on your head (d) a cap or hat
15. 15.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
16. 16.True or false: clean water is opaque. (a) False (b) True
17. 17.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
18. 18.🔦 Which of these is transparent? (a) tissue paper (b) a book (c) frosted glass (d) clean water
19. 19.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) east (c) west (d) north
20. 20.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
21. 21.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
22. 22.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
23. 23.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.⚖️ 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 stick (c) the time of day
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) shadow length (c) the same spot (d) the time of day
27. 27.True or false: yeast is needed for the shadow clock. (a) True (b) False
28. 28.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a mirror (d) a straight stick
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
31. 31.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
32. 32.True or false: a brick is translucent. (a) False (b) True
33. 33.🧺 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 sunny open place (d) yeast
34. 34.True or false: tissue paper is opaque. (a) True (b) False
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
36. 36.⚖️ 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
37. 37.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) oily paper (b) clear plastic film (c) air (d) clear glass
39. 39.⚖️ 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) the time of day (c) the same stick (d) shadow length
40. 40.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed

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