Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 142 · 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 translucent? (a) clean water (b) a book (c) clear plastic film (d) butter paper
2. 2.🔦 Which of these is transparent? (a) frosted glass (b) your hand (c) a book (d) clear plastic film
3. 3.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) turmeric powder (d) a clock to check
5. 5.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) brighter (d) smaller
6. 6.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a sunny open place (d) a mirror
7. 7.🔍 Which is the odd one out? (a) a brick (b) a book (c) clear plastic film (d) a steel plate
8. 8.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
9. 9.🧺 Which of these is needed for the shadow clock? (a) yeast (b) turmeric powder (c) a magnet (d) a straight stick
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.⚖️ 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
12. 12.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) late evening (d) early morning
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
14. 14.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.⚖️ 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) True (b) False
17. 17.True or false: a brick is transparent. (a) False (b) True
18. 18.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
19. 19.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
20. 20.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
21. 21.True or false: clean water is opaque. (a) True (b) False
22. 22.⚖️ 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 measure it (c) we change it
23. 23.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
24. 24.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick grows (c) the ground slides (d) the stick walks
25. 25.🧺 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
26. 26.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same spot (c) the time of day (d) shadow length
28. 28.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
29. 29.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a raincoat (d) a woollen sweater
30. 30.True or false: a magnet is needed for the shadow clock. (a) False (b) True
31. 31.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a straight stick (d) a clock to check
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🔦 Which of these is opaque? (a) clear glass (b) tissue paper (c) clear plastic film (d) a wooden board
36. 36.🔦 Which of these is transparent? (a) frosted glass (b) butter paper (c) tissue paper (d) clean water
37. 37.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a balloon (c) a mirror (d) a battery cell
38. 38.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
39. 39.🔦 Which of these is opaque? (a) frosted glass (b) a brick (c) oily paper (d) clear plastic film
40. 40.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade

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