Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 301 · 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.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
2. 2.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) brighter (c) bigger (d) smaller
3. 3.🔦 Which of these is transparent? (a) a book (b) air (c) a brick (d) tissue paper
4. 4.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) a clock to check (d) a sunny open place
6. 6.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
7. 7.🛟 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
8. 8.🔦 Which of these is transparent? (a) frosted glass (b) clear glass (c) a brick (d) a steel plate
9. 9.True or false: yeast is needed for the shadow clock. (a) False (b) True
10. 10.⚖️ 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) shadow length (d) the time of day
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) yeast
12. 12.⚖️ 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 measure it (c) we keep it the same
13. 13.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
14. 14.🛟 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
15. 15.True or false: clear plastic film is transparent. (a) True (b) False
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the same spot (d) the time of day
17. 17.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
18. 18.🧺 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
19. 19.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
20. 20.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) yeast (d) a sunny open place
21. 21.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
22. 22.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) shows two times (d) runs faster
23. 23.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
24. 24.🧺 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) a magnet
25. 25.🔍 Which is the odd one out? (a) a steel plate (b) a brick (c) clear glass (d) your hand
26. 26.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) east (c) up (d) north
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same stick (c) the time of day
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a mirror (d) a clock to check
29. 29.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a magnet (c) turmeric powder (d) a sunny open place
30. 30.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
31. 31.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
34. 34.🔍 Which is the odd one out? (a) your hand (b) a steel plate (c) butter paper (d) a wooden board
35. 35.🌍 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
36. 36.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
37. 37.True or false: a brick is opaque. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
40. 40.🔦 Which of these is translucent? (a) clear plastic film (b) clean water (c) butter paper (d) a wooden board

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