Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 769 · 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 same spot is what we measure. (a) True (b) False
2. 2.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) up (b) east (c) north (d) west
3. 3.True or false: turmeric powder is needed for the shadow clock. (a) False (b) True
4. 4.⚖️ 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
5. 5.⚖️ 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) shadow length (c) the time of day
6. 6.True or false: air is transparent. (a) False (b) True
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🔍 Which is the odd one out? (a) clear glass (b) air (c) clean water (d) a book
9. 9.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) round (c) missing (d) long
10. 10.🔦 Is air opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
11. 11.⚖️ 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
12. 12.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) a straight stick (d) a balloon
13. 13.True or false: your hand is translucent. (a) False (b) True
14. 14.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a clock to check (c) chalk to mark shadows (d) yeast
15. 15.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
16. 16.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
17. 17.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) look straight at the Sun (d) sit in the shade
18. 18.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a balloon (d) a clock to check
20. 20.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) chalk to mark shadows (c) a clock to check (d) turmeric powder
21. 21.True or false: yeast is needed for the shadow clock. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) frosted glass (d) a brick
23. 23.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a balloon (c) a mirror (d) a clock to check
24. 24.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
26. 26.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
27. 27.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
28. 28.🌞 When is a stick’s shadow the shortest? (a) at night (b) early morning (c) late evening (d) around noon
29. 29.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) works better (d) shows two times
30. 30.⚖️ 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
31. 31.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
32. 32.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
33. 33.⚖️ 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) False (b) True
34. 34.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
35. 35.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a battery cell (d) a straight stick
36. 36.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick walks (d) the stick grows
37. 37.🔦 Which of these is transparent? (a) clean water (b) a wooden board (c) tissue paper (d) your hand
38. 38.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
39. 39.True or false: clear plastic film is opaque. (a) True (b) False
40. 40.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed

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