Shadow and Sundial Experiment Worksheet

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

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