Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 825 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a sunny open place (d) a straight stick
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the stick kept upright (c) the same spot (d) shadow length
3. 3.⚖️ 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
4. 4.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False
6. 6.🧺 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 balloon (d) a sunny open place
7. 7.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
8. 8.True or false: a magnet is needed for the shadow clock. (a) True (b) False
9. 9.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
10. 10.⚖️ 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
11. 11.🔦 Which of these is opaque? (a) a brick (b) tissue paper (c) clean water (d) clear glass
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
13. 13.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
14. 14.🧺 Do we need turmeric powder 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) True (b) False
16. 16.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
17. 17.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
18. 18.🛟 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
19. 19.⚖️ 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 change it (c) we measure it
20. 20.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
21. 21.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
22. 22.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
23. 23.True or false: clean water is opaque. (a) True (b) False
24. 24.True or false: your hand is opaque. (a) True (b) False
25. 25.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) a sunny open place (d) a magnet
26. 26.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
27. 27.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
28. 28.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a battery cell (c) chalk to mark shadows (d) a straight stick
29. 29.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a mirror (d) a sunny open place
30. 30.True or false: clear plastic film is opaque. (a) True (b) False
31. 31.🔦 Which of these is transparent? (a) tissue paper (b) clear glass (c) a wooden board (d) butter paper
32. 32.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a battery cell (c) a magnet (d) a straight stick
33. 33.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a cap or hat (d) a raincoat
34. 34.🔍 Which is the odd one out? (a) a book (b) air (c) clean water (d) clear glass
35. 35.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a mirror (d) a clock to check
36. 36.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
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 sunny open place
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.⚖️ 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) True (b) False
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) True (b) False

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