Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 806 · 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.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
2. 2.⚖️ 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 change it (c) we keep it the same
3. 3.🔦 Which of these is opaque? (a) clean water (b) oily paper (c) air (d) a brick
4. 4.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
5. 5.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
6. 6.🧺 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 magnet
7. 7.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
8. 8.🔦 Which of these is transparent? (a) clear glass (b) frosted glass (c) butter paper (d) oily paper
9. 9.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
10. 10.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) butter paper (b) a wooden board (c) frosted glass (d) oily paper
12. 12.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) frosted glass (d) your hand
13. 13.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) Earth keeps spinning (d) the stick grows
14. 14.True or false: yeast is needed for the shadow clock. (a) True (b) False
15. 15.⚖️ 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
16. 16.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a woollen sweater (d) a raincoat
17. 17.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) runs faster (d) shows two times
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the same stick (c) the same spot (d) shadow length
19. 19.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
20. 20.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) up (c) west (d) east
21. 21.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) yeast (d) turmeric powder
22. 22.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) sit in the shade (d) mark with chalk
23. 23.🔍 Which is the odd one out? (a) oily paper (b) clean water (c) butter paper (d) frosted glass
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
25. 25.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
26. 26.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a sunny open place (d) a balloon
28. 28.⚖️ 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) False (b) True
29. 29.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
30. 30.⚖️ 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
31. 31.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) short (d) long
32. 32.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
33. 33.⚖️ 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 stick (c) shadow length
34. 34.🔦 Which of these is opaque? (a) oily paper (b) a book (c) air (d) tissue paper
35. 35.⚖️ 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) the same stick (d) shadow length
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) yeast
37. 37.⚖️ 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) False (b) True
38. 38.🔍 Which is the odd one out? (a) clear plastic film (b) your hand (c) a steel plate (d) a wooden board
39. 39.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
40. 40.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a clock to check (d) a balloon

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