Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 787 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) shows two times (c) runs faster (d) works better
2. 2.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) a steel plate (d) air
4. 4.True or false: a brick is opaque. (a) True (b) False
5. 5.🕰️ What is a sundial used for? (a) telling the time (b) making rainbows (c) measuring rain (d) weighing things
6. 6.🧺 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 balloon (d) a clock to check
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 keep it the same (c) we measure it
8. 8.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
10. 10.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
11. 11.True or false: your hand is opaque. (a) False (b) True
12. 12.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
13. 13.True or false: yeast is not needed for the shadow clock. (a) False (b) True
14. 14.True or false: a brick is transparent. (a) False (b) True
15. 15.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
16. 16.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) a raincoat (d) nothing on your head
17. 17.🔍 Which is the odd one out? (a) a book (b) air (c) clean water (d) clear glass
18. 18.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) bigger (c) smaller (d) brighter
19. 19.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
20. 20.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
21. 21.🔦 Which of these is opaque? (a) air (b) your hand (c) clean water (d) tissue paper
22. 22.⚖️ 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
23. 23.True or false: butter paper is opaque. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
27. 27.🔦 Which of these is opaque? (a) oily paper (b) tissue paper (c) a wooden board (d) clean water
28. 28.⚖️ 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 same stick (c) shadow length
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
30. 30.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
31. 31.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) yeast (d) a sunny open place
32. 32.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) turmeric powder (d) a clock to check
34. 34.True or false: a wooden board is translucent. (a) True (b) False
35. 35.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
37. 37.🔍 Which is the odd one out? (a) clean water (b) clear glass (c) tissue paper (d) clear plastic film
38. 38.True or false: air is opaque. (a) True (b) False
39. 39.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) at night (d) around noon
40. 40.⚖️ 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) True (b) False

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