Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 111 · 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 is the odd one out? (a) your hand (b) air (c) clear glass (d) clear plastic film
2. 2.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a battery cell (c) turmeric powder (d) a straight stick
3. 3.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
4. 4.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
5. 5.True or false: clear glass is opaque. (a) False (b) True
6. 6.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is the one thing we change. (a) True (b) False
8. 8.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a sunny open place (c) turmeric powder (d) a battery cell
9. 9.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
10. 10.⚖️ 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) shadow length (c) the same stick (d) the same spot
11. 11.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun
12. 12.🔦 Which of these is opaque? (a) oily paper (b) frosted glass (c) butter paper (d) a brick
13. 13.🔦 Is frosted glass opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
14. 14.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a battery cell (c) chalk to mark shadows (d) a sunny open place
15. 15.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) west (c) north (d) east
16. 16.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) a battery cell (d) turmeric powder
17. 17.🕰️ What is a sundial used for? (a) weighing things (b) making rainbows (c) measuring rain (d) telling the time
18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
19. 19.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
20. 20.⚖️ 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) shadow length (c) the same spot (d) the same stick
21. 21.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
22. 22.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
23. 23.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
24. 24.🔦 Which of these is transparent? (a) clear glass (b) butter paper (c) a steel plate (d) tissue paper
25. 25.⚖️ 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
26. 26.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) around noon (d) late evening
27. 27.⚖️ 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
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) yeast (c) a straight stick (d) a sunny open place
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a battery cell (d) chalk to mark shadows
31. 31.⚖️ 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
32. 32.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
34. 34.True or false: air is opaque. (a) False (b) True
35. 35.🔦 Which of these is transparent? (a) butter paper (b) air (c) frosted glass (d) a wooden board
36. 36.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
37. 37.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
39. 39.True or false: a steel plate is translucent. (a) False (b) True
40. 40.⚖️ 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 keep it the same (c) we change it

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