Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 371 · 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 air opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) short (d) round
4. 4.🔍 Which is the odd one out? (a) oily paper (b) a steel plate (c) your hand (d) a brick
5. 5.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
6. 6.🛟 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
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a clock to check (d) a magnet
9. 9.🔦 Which of these is translucent? (a) a wooden board (b) a brick (c) clear glass (d) frosted glass
10. 10.🔦 Which of these is translucent? (a) air (b) a steel plate (c) a book (d) butter paper
11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a straight stick (d) a sunny open place
12. 12.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
13. 13.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) coloured (d) brighter
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: yeast is needed for the shadow clock. (a) True (b) False
16. 16.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
17. 17.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) an object blocks light (d) the object is cold
18. 18.🧺 Which of these is needed for the shadow clock? (a) yeast (b) turmeric powder (c) a battery cell (d) a straight stick
19. 19.🔦 Which of these is transparent? (a) your hand (b) a steel plate (c) butter paper (d) clean water
20. 20.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
21. 21.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
22. 22.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
23. 23.⚖️ 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 stick kept upright (c) shadow length
24. 24.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) a sunny open place (d) a clock to check
25. 25.⚖️ 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 measure it (c) we change it
26. 26.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) chalk to mark shadows (c) a magnet (d) a mirror
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) a battery cell
28. 28.🔍 Which is the odd one out? (a) frosted glass (b) clean water (c) clear glass (d) clear plastic film
29. 29.🔦 Is frosted glass 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: the time of day is what we measure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a balloon (d) a straight stick
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) False (b) True
33. 33.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
34. 34.True or false: a wooden board is opaque. (a) False (b) True
35. 35.True or false: air is opaque. (a) False (b) True
36. 36.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the ground slides (d) the stick grows
37. 37.🔦 Which of these is opaque? (a) a wooden board (b) frosted glass (c) air (d) tissue paper
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a mirror (c) chalk to mark shadows (d) a straight stick
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed

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