Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 819 · 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.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) mark with chalk (d) sit in the shade
2. 2.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the same stick (d) the stick kept upright
4. 4.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) a wooden board (d) air
5. 5.⚖️ 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) shadow length (d) the same stick
6. 6.True or false: a magnet is needed for the shadow clock. (a) False (b) True
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
8. 8.True or false: a steel plate is opaque. (a) True (b) False
9. 9.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
11. 11.🛟 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
12. 12.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
13. 13.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the ground slides (d) the stick grows
14. 14.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a mirror (d) chalk to mark shadows
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) turmeric powder (c) yeast (d) chalk to mark shadows
18. 18.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) butter paper (d) your hand
19. 19.True or false: clean water is translucent. (a) True (b) False
20. 20.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) False (b) True
22. 22.True or false: your hand is transparent. (a) False (b) True
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) True (b) False
24. 24.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
25. 25.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
27. 27.🧺 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
28. 28.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
29. 29.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
30. 30.True or false: yeast is not needed for the shadow clock. (a) False (b) True
31. 31.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
32. 32.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
33. 33.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
34. 34.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a straight stick (d) a balloon
35. 35.⚖️ 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) the same spot (c) shadow length
36. 36.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a battery cell (d) a sunny open place
37. 37.⚖️ 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
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 keep it the same (b) we change it (c) we measure it
39. 39.True or false: a steel plate is transparent. (a) True (b) False
40. 40.True or false: frosted glass is translucent. (a) True (b) False

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