Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 211 · 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 a balloon for the shadow clock? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a straight stick (d) turmeric powder
3. 3.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) round (c) short (d) missing
4. 4.🛟 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
5. 5.🔍 Which is the odd one out? (a) tissue paper (b) clear glass (c) clear plastic film (d) clean water
6. 6.🔦 Is clear glass opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
7. 7.📘 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
8. 8.True or false: a balloon is needed for the shadow clock. (a) False (b) True
9. 9.⚖️ 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) the same stick (d) shadow length
10. 10.🔍 Which is the odd one out? (a) clear glass (b) air (c) your hand (d) clear plastic film
11. 11.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) a brick (b) a steel plate (c) clear plastic film (d) a wooden board
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) chalk to mark shadows (c) a balloon (d) a straight stick
16. 16.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
17. 17.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
18. 18.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a cap or hat (c) a woollen sweater (d) a raincoat
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 stick kept upright (b) shadow length (c) the time of day (d) the same stick
20. 20.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
21. 21.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
22. 22.True or false: clear plastic film is translucent. (a) True (b) False
23. 23.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
24. 24.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a magnet (d) chalk to mark shadows
25. 25.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
26. 26.🌞 When is a stick’s shadow the shortest? (a) at night (b) around noon (c) early morning (d) late evening
27. 27.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
28. 28.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a sunny open place (c) a clock to check (d) chalk to mark shadows
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) True (b) False
30. 30.⚖️ 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 spot (c) shadow length
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) yeast (c) a clock to check (d) a straight stick
32. 32.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
33. 33.True or false: yeast is needed for the shadow clock. (a) False (b) True
34. 34.⚖️ 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
35. 35.True or false: a book is transparent. (a) False (b) True
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) yeast (d) a sunny open place
38. 38.🔦 Which of these is translucent? (a) a wooden board (b) clear glass (c) a brick (d) butter paper
39. 39.⚖️ 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
40. 40.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False

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