Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 624 · 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.🔦 Which of these is opaque? (a) butter paper (b) oily paper (c) a brick (d) clear glass
2. 2.⚖️ 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 stick
3. 3.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a battery cell (b) chalk to mark shadows (c) a sunny open place (d) a straight stick
5. 5.🔦 Which of these is translucent? (a) a book (b) clear plastic film (c) oily paper (d) a wooden board
6. 6.True or false: a mirror is needed for the shadow clock. (a) True (b) False
7. 7.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the ground slides (c) the stick grows (d) the stick walks
8. 8.🧺 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) turmeric powder
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: a brick is translucent. (a) True (b) False
11. 11.🧺 Do we need yeast for the shadow clock? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a battery cell (d) a straight stick
14. 14.⚖️ 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
15. 15.🛟 While watching shadows outdoors, what must you never do? (a) look straight at the Sun (b) sit in the shade (c) wear a cap (d) mark with chalk
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) a straight stick (c) chalk to mark shadows (d) a sunny open place
17. 17.⚖️ 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) True (b) False
18. 18.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) works better (d) shows two times
19. 19.🔍 Which is the odd one out? (a) clear plastic film (b) oily paper (c) tissue paper (d) frosted glass
20. 20.🔦 Which of these is transparent? (a) a steel plate (b) your hand (c) tissue paper (d) clear glass
21. 21.🔦 Which of these is opaque? (a) clear glass (b) oily paper (c) butter paper (d) a wooden board
22. 22.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) long (d) short
23. 23.True or false: air is translucent. (a) True (b) False
24. 24.True or false: a steel plate is opaque. (a) False (b) True
25. 25.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) chalk to mark shadows (d) a straight stick
27. 27.🌞 When is a stick’s shadow the shortest? (a) early morning (b) around noon (c) late evening (d) at night
28. 28.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is what we measure. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) butter paper (b) clear glass (c) frosted glass (d) oily paper
30. 30.🧺 Do we need chalk to mark shadows for the shadow clock? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) tissue paper (b) frosted glass (c) oily paper (d) clean water
32. 32.🔦 Which of these is opaque? (a) clean water (b) clear plastic film (c) tissue paper (d) your hand
33. 33.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) bigger (c) coloured (d) brighter
34. 34.🔍 Which is the odd one out? (a) tissue paper (b) butter paper (c) frosted glass (d) a wooden board
35. 35.⚖️ 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 stick kept upright (c) the same stick (d) shadow length
36. 36.🔦 Is a book opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a clock to check (d) a magnet
39. 39.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a balloon (c) a straight stick (d) turmeric powder
40. 40.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed

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