Shadow and Sundial Experiment Worksheet

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

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