Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 942 · 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.🧺 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) a straight stick (d) a battery cell
2. 2.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) shows two times (d) works better
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) chalk to mark shadows (c) a clock to check (d) a mirror
4. 4.🛟 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
5. 5.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) bigger (d) brighter
6. 6.⚖️ 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 spot (c) shadow length (d) the same stick
7. 7.🔍 Which is the odd one out? (a) a wooden board (b) frosted glass (c) butter paper (d) oily paper
8. 8.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) clear plastic film (d) a brick
9. 9.True or false: a magnet is needed for the shadow clock. (a) False (b) True
10. 10.🧺 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
11. 11.⚖️ 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
12. 12.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
13. 13.True or false: tissue paper is transparent. (a) True (b) False
14. 14.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) yeast (d) a balloon
15. 15.⚖️ 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
16. 16.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
17. 17.🔍 Which is the odd one out? (a) clean water (b) air (c) clear plastic film (d) oily paper
18. 18.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
19. 19.⚖️ 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 time of day (c) the same spot
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.⚖️ 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 stick (b) the stick kept upright (c) shadow length (d) the time of day
22. 22.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) turmeric powder (c) a straight stick (d) a battery cell
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a clock to check (d) a straight stick
24. 24.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) frosted glass (b) butter paper (c) a brick (d) oily paper
26. 26.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a balloon (c) a battery cell (d) a sunny open place
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
28. 28.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) missing (d) long
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.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) False (b) True
31. 31.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a clock to check (d) a balloon
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) True (b) False
33. 33.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
34. 34.📘 Why does a shadow form? (a) light bends round it (b) an object blocks light (c) the ground is dark (d) the object is cold
35. 35.🔦 Which of these is opaque? (a) air (b) frosted glass (c) oily paper (d) a book
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a magnet (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
37. 37.🔦 Which of these is transparent? (a) clean water (b) a brick (c) tissue paper (d) butter paper
38. 38.🔍 Which is the odd one out? (a) a wooden board (b) your hand (c) clear glass (d) a book
39. 39.🔦 Which of these is transparent? (a) your hand (b) clear glass (c) a wooden board (d) frosted glass
40. 40.⚖️ 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) False (b) True

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