Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 913 · 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 magnet (b) a straight stick (c) a clock to check (d) chalk to mark shadows
2. 2.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) up (d) west
3. 3.True or false: clean water is opaque. (a) True (b) False
4. 4.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a sunny open place (c) yeast (d) a mirror
5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) a mirror
6. 6.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
7. 7.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
8. 8.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
9. 9.🔍 Which is the odd one out? (a) clean water (b) oily paper (c) clear plastic film (d) clear glass
10. 10.⚖️ 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
11. 11.⚖️ 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) False (b) True
12. 12.⚖️ 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
13. 13.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a straight stick (d) a balloon
15. 15.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
16. 16.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
17. 17.🌞 When is a stick’s shadow the shortest? (a) late evening (b) around noon (c) at night (d) early morning
18. 18.🔦 Which of these is opaque? (a) butter paper (b) tissue paper (c) clean water (d) a brick
19. 19.True or false: yeast is not needed for the shadow clock. (a) True (b) False
20. 20.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
22. 22.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
23. 23.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a cap or hat (d) a woollen sweater
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.⚖️ 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
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
30. 30.True or false: air is transparent. (a) True (b) False
31. 31.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
32. 32.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
33. 33.⚖️ 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 stick (b) the same spot (c) the time of day (d) the stick kept upright
34. 34.🔦 Which of these is transparent? (a) clean water (b) oily paper (c) a brick (d) a book
35. 35.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
36. 36.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) works better (d) runs faster
37. 37.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) round (d) long
38. 38.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
39. 39.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
40. 40.🧺 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

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