Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 254 · 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? Which of these is what we measure? (a) the time of day (b) the same spot (c) shadow length (d) the stick kept upright
2. 2.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) does not work well (c) shows two times (d) works better
3. 3.🧺 Which of these is needed for the shadow clock? (a) yeast (b) chalk to mark shadows (c) turmeric powder (d) a balloon
4. 4.🔍 Which is the odd one out? (a) tissue paper (b) clean water (c) butter paper (d) oily paper
5. 5.🛟 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
6. 6.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) nothing on your head (c) a raincoat (d) a cap or hat
7. 7.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
8. 8.🔍 Which is the odd one out? (a) clear plastic film (b) butter paper (c) oily paper (d) frosted glass
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the same spot (b) the time of day (c) shadow length (d) the stick kept upright
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.True or false: air is transparent. (a) True (b) False
13. 13.True or false: a steel plate is opaque. (a) True (b) False
14. 14.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed
15. 15.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) yeast (c) a sunny open place (d) a balloon
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a balloon (d) a sunny open place
19. 19.🔍 Which is the odd one out? (a) a steel plate (b) a wooden board (c) a book (d) clear glass
20. 20.🔦 Which of these is opaque? (a) air (b) tissue paper (c) clean water (d) a wooden board
21. 21.True or false: chalk to mark shadows is not needed for the shadow clock. (a) True (b) False
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a clock to check (c) yeast (d) a straight stick
23. 23.True or false: clear plastic film is transparent. (a) True (b) False
24. 24.🧺 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 magnet (d) a sunny open place
25. 25.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a sunny open place (c) a battery cell (d) a clock to check
26. 26.📘 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
27. 27.🧺 Which of these is needed for the shadow clock? (a) turmeric powder (b) a clock to check (c) a balloon (d) a mirror
28. 28.🔍 Which is the odd one out? (a) your hand (b) air (c) a steel plate (d) a wooden board
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a magnet (c) a clock to check (d) a sunny open place
30. 30.🔦 Which of these is translucent? (a) clear plastic film (b) a steel plate (c) tissue paper (d) clear glass
31. 31.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) late evening (d) around noon
32. 32.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
33. 33.🌍 Why does the stick’s shadow move during the day? (a) the stick grows (b) the ground slides (c) the stick walks (d) Earth keeps spinning
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) oily paper (b) tissue paper (c) frosted glass (d) a book
36. 36.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
37. 37.🔦 Which of these is translucent? (a) a wooden board (b) frosted glass (c) a steel plate (d) clear glass
38. 38.🔦 Which of these is opaque? (a) a steel plate (b) oily paper (c) tissue paper (d) clear plastic film
39. 39.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
40. 40.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent

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