Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 216 · 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 turmeric powder for the shadow clock? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) turmeric powder (c) a battery cell (d) chalk to mark shadows
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) a sunny open place (d) turmeric powder
4. 4.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clear glass (d) a steel plate
5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a clock to check (c) a sunny open place (d) a straight stick
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
7. 7.🛟 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
8. 8.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the time of day (c) shadow length (d) the same stick
9. 9.⚖️ 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
10. 10.🌞 When is a stick’s shadow the shortest? (a) at night (b) late evening (c) early morning (d) around noon
11. 11.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) wear a cap (d) look straight at the Sun
12. 12.🔦 Which of these is opaque? (a) butter paper (b) tissue paper (c) frosted glass (d) a steel plate
13. 13.True or false: a brick is opaque. (a) False (b) True
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) shadow length (c) the time of day (d) the stick kept upright
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a straight stick (d) a clock to check
16. 16.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
17. 17.True or false: tissue paper is opaque. (a) False (b) True
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) Earth keeps spinning (d) the stick grows
20. 20.⚖️ 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
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) clean water (b) your hand (c) clear glass (d) air
23. 23.🔍 Which is the odd one out? (a) clean water (b) clear plastic film (c) a book (d) clear glass
24. 24.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
25. 25.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) runs faster (d) does not work well
26. 26.🔦 Which of these is transparent? (a) air (b) tissue paper (c) frosted glass (d) a brick
27. 27.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
28. 28.True or false: a magnet is needed for the shadow clock. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) clear plastic film (b) air (c) clear glass (d) a wooden board
30. 30.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a brick (b) clear glass (c) a wooden board (d) a book
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) the time of day (c) shadow length
33. 33.🔦 Is clean water opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a balloon
36. 36.True or false: your hand is opaque. (a) False (b) True
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
39. 39.🔍 Which is the odd one out? (a) frosted glass (b) a book (c) your hand (d) a wooden board
40. 40.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) missing (c) long (d) round

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