Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 56 · 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.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) around noon (d) late evening
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a clock to check (c) a sunny open place (d) a straight stick
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
5. 5.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) sit in the shade (c) look straight at the Sun (d) mark with chalk
6. 6.⚖️ 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) True (b) False
7. 7.True or false: a wooden board is opaque. (a) False (b) True
8. 8.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a straight stick (c) yeast (d) turmeric powder
9. 9.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
10. 10.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a cap or hat (c) nothing on your head (d) a raincoat
11. 11.True or false: a balloon is needed for the shadow clock. (a) True (b) False
12. 12.🔦 Is a brick opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
13. 13.🧺 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 clock to check (d) a balloon
14. 14.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) missing (d) short
15. 15.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
16. 16.🔦 Which of these is translucent? (a) clear glass (b) frosted glass (c) a wooden board (d) clean water
17. 17.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) light bends round it (d) an object blocks light
18. 18.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
19. 19.🧺 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) a magnet (d) chalk to mark shadows
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
21. 21.🔦 Which of these is transparent? (a) a wooden board (b) butter paper (c) clean water (d) a book
22. 22.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the time of day (b) the same stick (c) the stick kept upright (d) shadow length
24. 24.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
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.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) turmeric powder (c) yeast (d) chalk to mark shadows
27. 27.⚖️ 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
28. 28.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) weighing things (d) measuring rain
31. 31.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
32. 32.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
33. 33.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
34. 34.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) clean water (b) tissue paper (c) oily paper (d) butter paper
36. 36.🔍 Which is the odd one out? (a) tissue paper (b) oily paper (c) butter paper (d) your hand
37. 37.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the ground slides (c) the stick grows (d) Earth keeps spinning
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed

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