Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 189 · 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? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🌍 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
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the time of day (c) the same stick (d) the stick kept upright
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) a book (d) frosted glass
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 battery cell is not needed for the shadow clock. (a) False (b) True
8. 8.⚖️ 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
9. 9.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) mark with chalk (d) look straight at the Sun
10. 10.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
11. 11.⚖️ 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
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) turmeric powder (c) a clock to check (d) a sunny open place
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) a sunny open place (d) a clock to check
14. 14.⚖️ 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 spot (b) the same stick (c) the stick kept upright (d) the time of day
15. 15.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
16. 16.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
17. 17.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is the one thing we change. (a) False (b) True
19. 19.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a balloon (c) a mirror (d) a battery cell
20. 20.True or false: air is translucent. (a) True (b) False
21. 21.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
22. 22.True or false: chalk to mark shadows is not needed for the shadow clock. (a) False (b) True
23. 23.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
24. 24.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) clear glass (d) air
25. 25.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a battery cell (c) a sunny open place (d) a magnet
26. 26.⚖️ 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
27. 27.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) False (b) True
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a sunny open place (d) chalk to mark shadows
31. 31.True or false: a magnet is needed for the shadow clock. (a) True (b) False
32. 32.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a magnet (d) a straight stick
33. 33.📘 Why does a shadow form? (a) the object is cold (b) light bends round it (c) an object blocks light (d) the ground is dark
34. 34.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a straight stick (d) chalk to mark shadows
37. 37.🔦 Which of these is translucent? (a) clear glass (b) a wooden board (c) your hand (d) butter paper
38. 38.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
39. 39.🔦 Which of these is translucent? (a) a book (b) clear glass (c) air (d) tissue paper
40. 40.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed

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