Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 451 · 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.🔦 Is oily paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
2. 2.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
3. 3.🔦 Is a book opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) turmeric powder (d) a sunny open place
6. 6.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the stick walks (d) the ground slides
7. 7.🌞 When is a stick’s shadow the shortest? (a) early morning (b) late evening (c) around noon (d) at night
8. 8.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) long (c) short (d) missing
9. 9.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
10. 10.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) shows two times (d) does not work well
11. 11.⚖️ 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 stick kept upright (d) the same stick
12. 12.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) nothing on your head (d) a cap or hat
13. 13.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is what we measure. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the shadow clock? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a magnet (c) a clock to check (d) a straight stick
19. 19.⚖️ 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
20. 20.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
21. 21.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the stick kept upright (c) the same stick (d) the same spot
22. 22.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
23. 23.🔦 Which of these is translucent? (a) air (b) tissue paper (c) a brick (d) your hand
24. 24.True or false: clear plastic film is translucent. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a book (b) a steel plate (c) a wooden board (d) frosted glass
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) yeast (c) a straight stick (d) a battery cell
28. 28.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
29. 29.🧺 Which of these is not needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
30. 30.⚖️ 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
31. 31.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
32. 32.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) chalk to mark shadows (c) yeast (d) a straight stick
33. 33.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a battery cell (c) a clock to check (d) chalk to mark shadows
34. 34.⚖️ 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
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a clock to check is needed for the shadow clock. (a) False (b) True
37. 37.🔦 Is clean water opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
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.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
40. 40.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed

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