Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 717 · 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 translucent? (a) a book (b) oily paper (c) air (d) clear plastic film
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 keep it the same (c) we change it
3. 3.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) mark with chalk (c) wear a cap (d) sit in the shade
4. 4.⚖️ 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) the time of day (d) shadow length
5. 5.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) bigger (d) coloured
6. 6.⚖️ 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
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round
8. 8.True or false: a book is opaque. (a) False (b) True
9. 9.🧺 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 balloon
10. 10.True or false: clean water is translucent. (a) True (b) False
11. 11.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
12. 12.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
13. 13.🧺 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) a straight stick (d) a battery cell
14. 14.⚖️ 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
15. 15.🔦 Which of these is opaque? (a) butter paper (b) clean water (c) tissue paper (d) your hand
16. 16.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) frosted glass (b) a wooden board (c) oily paper (d) butter paper
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.True or false: a magnet is needed for the shadow clock. (a) True (b) False
20. 20.🔦 Which of these is opaque? (a) clear plastic film (b) a steel plate (c) frosted glass (d) oily paper
21. 21.⚖️ 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 same spot (c) shadow length (d) the stick kept upright
22. 22.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) chalk to mark shadows (d) a straight stick
24. 24.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
26. 26.⚖️ 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
27. 27.🔦 Is a brick opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
28. 28.⚖️ 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
29. 29.🧺 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
30. 30.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
33. 33.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a woollen sweater (d) a cap or hat
34. 34.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a sunny open place (c) turmeric powder (d) a balloon
35. 35.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a magnet (c) a sunny open place (d) chalk to mark shadows
37. 37.⚖️ 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
38. 38.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True
39. 39.🔦 Which of these is translucent? (a) a book (b) your hand (c) butter paper (d) a steel plate
40. 40.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent

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