Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 333 · 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.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
4. 4.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same spot (c) shadow length (d) the time of day
8. 8.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
9. 9.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
10. 10.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
11. 11.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
12. 12.🧺 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 sunny open place (d) a balloon
13. 13.🔦 Which of these is translucent? (a) your hand (b) a wooden board (c) clear plastic film (d) frosted glass
14. 14.⚖️ 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) the same stick (c) shadow length (d) the stick kept upright
15. 15.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
16. 16.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) yeast (c) a mirror (d) a sunny open place
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
19. 19.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
20. 20.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
21. 21.🔍 Which is the odd one out? (a) air (b) clear plastic film (c) a brick (d) clear glass
22. 22.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) yeast (d) a straight stick
23. 23.🔍 Which is the odd one out? (a) a wooden board (b) oily paper (c) a steel plate (d) your hand
24. 24.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) yeast (c) a balloon (d) chalk to mark shadows
25. 25.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
26. 26.⚖️ 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) False (b) True
27. 27.⚖️ 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 same spot (c) the time of day
28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster
29. 29.🔦 Which of these is opaque? (a) clean water (b) a wooden board (c) frosted glass (d) tissue paper
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 sunny open place (d) yeast
31. 31.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) bigger (d) brighter
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) turmeric powder (d) chalk to mark shadows
33. 33.True or false: a mirror is needed for the shadow clock. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a wooden board (b) a book (c) a brick (d) clear glass
35. 35.🧺 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 magnet (d) a sunny open place
36. 36.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
37. 37.🔦 Which of these is transparent? (a) tissue paper (b) frosted glass (c) your hand (d) clear plastic film
38. 38.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) butter paper (d) clean water
39. 39.🔦 Is oily paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
40. 40.True or false: a wooden board is translucent. (a) False (b) True

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