Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 751 · 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? What do we do with “shadow length”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a battery cell (c) a sunny open place (d) a straight stick
3. 3.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) a cap or hat (c) nothing on your head (d) a woollen sweater
4. 4.True or false: clear glass is opaque. (a) False (b) True
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) measuring rain (d) weighing things
7. 7.True or false: tissue paper is translucent. (a) True (b) False
8. 8.True or false: a wooden board is opaque. (a) True (b) False
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.🔦 Which of these is translucent? (a) a wooden board (b) your hand (c) oily paper (d) clean water
12. 12.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
13. 13.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.📘 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
16. 16.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
17. 17.True or false: turmeric powder is needed for the shadow clock. (a) True (b) False
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a sunny open place (c) chalk to mark shadows (d) a straight stick
19. 19.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
20. 20.🧺 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) yeast
21. 21.🔍 Which is the odd one out? (a) a wooden board (b) your hand (c) clean water (d) a steel plate
22. 22.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
23. 23.🛟 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
24. 24.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) yeast (d) a mirror
25. 25.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
26. 26.True or false: a sunny open place is needed for the shadow clock. (a) True (b) False
27. 27.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
28. 28.⚖️ 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 spot (c) the same stick (d) shadow length
29. 29.⚖️ 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) False (b) True
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
31. 31.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
32. 32.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
33. 33.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
34. 34.⚖️ 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
35. 35.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
36. 36.⚖️ 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
37. 37.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a clock to check (d) turmeric powder
39. 39.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
40. 40.🔦 Is clear glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent

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