Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 529 · 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.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) shows two times (d) runs faster
2. 2.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) mark with chalk (d) wear a cap
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) shadow length (c) the time of day (d) the same spot
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
5. 5.🧺 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 mirror (d) a sunny open place
6. 6.🔦 Is air opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) clear plastic film (d) oily paper
9. 9.🔦 Which of these is transparent? (a) clean water (b) butter paper (c) oily paper (d) frosted glass
10. 10.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
11. 11.⚖️ 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
12. 12.True or false: chalk to mark shadows is needed for the shadow clock. (a) True (b) False
13. 13.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the ground slides (d) the stick grows
14. 14.📘 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
15. 15.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
16. 16.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a straight stick (d) a balloon
17. 17.🔦 Which of these is transparent? (a) tissue paper (b) butter paper (c) air (d) oily paper
18. 18.True or false: butter paper is opaque. (a) True (b) False
19. 19.True or false: a mirror is needed for the shadow clock. (a) True (b) False
20. 20.⚖️ 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
21. 21.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a sunny open place (d) a balloon
22. 22.🔍 Which is the odd one out? (a) clean water (b) air (c) clear glass (d) butter paper
23. 23.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
25. 25.🧺 Which of these is needed for the shadow clock? (a) a straight stick (b) a balloon (c) a magnet (d) turmeric powder
26. 26.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) turmeric powder (c) a straight stick (d) a sunny open place
27. 27.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) a brick (b) frosted glass (c) your hand (d) a steel plate
29. 29.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a battery cell (c) a clock to check (d) a straight stick
30. 30.True or false: yeast is not needed for the shadow clock. (a) True (b) False
31. 31.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
32. 32.🛟 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
33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) round (c) long (d) short
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🧺 Do we need turmeric powder for the shadow clock? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) a steel plate (b) tissue paper (c) oily paper (d) frosted glass
37. 37.🧺 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
38. 38.🔦 Which of these is opaque? (a) frosted glass (b) tissue paper (c) clear glass (d) a book
39. 39.True or false: a mirror is not needed for the shadow clock. (a) True (b) False
40. 40.🔦 Which of these is opaque? (a) your hand (b) oily paper (c) frosted glass (d) butter paper

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