Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 839 · 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 needed for the shadow clock? (a) a clock to check (b) turmeric powder (c) a battery cell (d) a balloon
2. 2.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
3. 3.🔦 Which of these is opaque? (a) clean water (b) frosted glass (c) a brick (d) oily paper
4. 4.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) long (d) round
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) wear a cap (c) mark with chalk (d) look straight at the Sun
6. 6.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) coloured (c) brighter (d) bigger
7. 7.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.⚖️ 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 stick kept upright (c) the time of day (d) shadow length
10. 10.🌞 When is a stick’s shadow the shortest? (a) around noon (b) at night (c) late evening (d) early morning
11. 11.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a cap or hat (d) a raincoat
12. 12.⚖️ 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 same spot (d) the time of day
13. 13.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
14. 14.🧺 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) a balloon
15. 15.🔍 Which is the odd one out? (a) a book (b) a wooden board (c) your hand (d) frosted glass
16. 16.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
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 change it (b) we keep it the same (c) we measure it
18. 18.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
19. 19.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) chalk to mark shadows (c) a clock to check (d) a straight stick
22. 22.🔍 Which is the odd one out? (a) clear plastic film (b) clear glass (c) butter paper (d) clean water
23. 23.🔍 Which is the odd one out? (a) tissue paper (b) clean water (c) oily paper (d) frosted glass
24. 24.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a sunny open place (c) a clock to check (d) a straight stick
25. 25.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a mirror
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) False (b) True
27. 27.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) up (d) east
28. 28.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) clear glass (b) clean water (c) your hand (d) air
30. 30.⚖️ 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
31. 31.🔦 Which of these is opaque? (a) a steel plate (b) clean water (c) butter paper (d) clear plastic film
32. 32.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) chalk to mark shadows (c) a sunny open place (d) yeast
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.🧺 Do we need a mirror for the shadow clock? (a) needed (b) not needed
35. 35.🔦 Which of these is transparent? (a) a brick (b) tissue paper (c) clear plastic film (d) a book
36. 36.⚖️ 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
37. 37.True or false: yeast is needed for the shadow clock. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: a mirror is needed for the shadow clock. (a) False (b) True
40. 40.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque

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