Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 932 · 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.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
2. 2.⚖️ 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 stick (c) the same spot (d) shadow length
3. 3.🧺 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 straight stick (d) a balloon
4. 4.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) look straight at the Sun (c) sit in the shade (d) wear a cap
5. 5.True or false: a wooden board is opaque. (a) True (b) False
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) False (b) True
7. 7.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) a brick (d) clear glass
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
13. 13.⚖️ 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) True (b) False
14. 14.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a balloon (c) a straight stick (d) a magnet
15. 15.⚖️ 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) shadow length (c) the same spot
16. 16.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
17. 17.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
18. 18.🛟 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
19. 19.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
20. 20.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
21. 21.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
22. 22.True or false: a battery cell is needed for the shadow clock. (a) True (b) False
23. 23.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a straight stick (c) a sunny open place (d) a magnet
24. 24.🔍 Which is the odd one out? (a) clear plastic film (b) clean water (c) your hand (d) air
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
26. 26.True or false: a steel plate is translucent. (a) False (b) True
27. 27.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) short (c) round (d) missing
28. 28.🔦 Which of these is opaque? (a) tissue paper (b) a wooden board (c) butter paper (d) clear glass
29. 29.True or false: yeast is not needed for the shadow clock. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) frosted glass (d) a wooden board
31. 31.True or false: a mirror is needed for the shadow clock. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) chalk to mark shadows (c) a clock to check (d) a straight stick
34. 34.⚖️ 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
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.True or false: a magnet is needed for the shadow clock. (a) True (b) False
37. 37.⚖️ 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) shadow length (c) the stick kept upright
38. 38.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) turmeric powder (d) a sunny open place
39. 39.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
40. 40.True or false: clear plastic film is transparent. (a) True (b) False

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