Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 811 · 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.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) look straight at the Sun (d) sit in the shade
2. 2.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a battery cell (c) a sunny open place (d) a magnet
3. 3.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) shows two times (c) works better (d) does not work well
4. 4.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) chalk to mark shadows (c) a sunny open place (d) a balloon
5. 5.True or false: a book is opaque. (a) False (b) True
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🕰️ What is a sundial used for? (a) weighing things (b) making rainbows (c) measuring rain (d) telling the time
8. 8.True or false: a battery cell is needed for the shadow clock. (a) False (b) True
9. 9.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) turmeric powder (c) a sunny open place (d) a clock to check
10. 10.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the stick kept upright (b) the same stick (c) the time of day (d) the same spot
12. 12.🧺 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) a straight stick
13. 13.🔦 Is oily paper opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
14. 14.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
15. 15.🧺 Do we need a clock to check for the shadow clock? (a) needed (b) not needed
16. 16.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) short (d) long
17. 17.🔍 Which is the odd one out? (a) air (b) butter paper (c) frosted glass (d) tissue paper
18. 18.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a mirror (c) a sunny open place (d) a straight stick
19. 19.🔦 Which of these is translucent? (a) clear plastic film (b) a book (c) tissue paper (d) a brick
20. 20.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
21. 21.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) chalk to mark shadows (d) a sunny open place
22. 22.📘 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
23. 23.🔦 Which of these is transparent? (a) tissue paper (b) oily paper (c) clear plastic film (d) frosted glass
24. 24.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) shadow length (b) the time of day (c) the same stick (d) the same spot
25. 25.⚖️ 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
26. 26.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) Earth keeps spinning (c) the ground slides (d) the stick walks
27. 27.⚖️ 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 measure it (c) we change it
28. 28.🔍 Which is the odd one out? (a) a brick (b) tissue paper (c) a wooden board (d) your hand
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 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 sunny open place (d) a mirror
31. 31.⚖️ 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
32. 32.🔦 Which of these is transparent? (a) a wooden board (b) clear glass (c) your hand (d) tissue paper
33. 33.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) clear plastic film (b) a wooden board (c) air (d) clear glass
35. 35.True or false: a sunny open place is not needed for the shadow clock. (a) False (b) True
36. 36.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
37. 37.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a magnet (c) a straight stick (d) a battery cell
38. 38.🌞 When is a stick’s shadow the shortest? (a) late evening (b) at night (c) early morning (d) around noon
39. 39.⚖️ 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
40. 40.True or false: a magnet is not needed for the shadow clock. (a) False (b) True

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