Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 728 · 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 of these is needed for the shadow clock? (a) yeast (b) a battery cell (c) turmeric powder (d) chalk to mark shadows
2. 2.True or false: a wooden board is opaque. (a) True (b) False
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) a magnet (d) a straight stick
4. 4.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
5. 5.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) missing (d) long
6. 6.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
7. 7.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a battery cell (c) a balloon (d) turmeric powder
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.🔦 Which of these is translucent? (a) a book (b) air (c) oily paper (d) clear plastic film
12. 12.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
13. 13.🔦 Is tissue paper opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
14. 14.📘 Why does a shadow form? (a) an object blocks light (b) light bends round it (c) the ground is dark (d) the object is cold
15. 15.True or false: your hand is transparent. (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 stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧺 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) yeast
18. 18.True or false: a mirror 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 the one thing we change? (a) the time of day (b) the same stick (c) the stick kept upright (d) shadow length
20. 20.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
21. 21.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) runs faster (d) works better
22. 22.⚖️ 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 stick
23. 23.⚖️ 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
24. 24.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) a steel plate (d) oily paper
26. 26.🧺 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) a clock to check
27. 27.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a balloon (c) chalk to mark shadows (d) a clock to check
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
30. 30.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
31. 31.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) Earth keeps spinning (d) the stick grows
32. 32.🔦 Which of these is translucent? (a) butter paper (b) a brick (c) a steel plate (d) a wooden board
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) the stick kept upright (c) shadow length (d) the same spot
34. 34.True or false: tissue paper is translucent. (a) False (b) True
35. 35.🔦 Which of these is translucent? (a) a steel plate (b) frosted glass (c) your hand (d) clear glass
36. 36.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
37. 37.True or false: your hand is opaque. (a) False (b) True
38. 38.⚖️ 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) True (b) False
39. 39.True or false: butter paper is translucent. (a) False (b) True
40. 40.True or false: clear plastic film is transparent. (a) True (b) False

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