Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 326 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) turmeric powder (d) chalk to mark shadows
2. 2.🔦 Which of these is translucent? (a) oily paper (b) a book (c) clear glass (d) a steel plate
3. 3.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
4. 4.🧺 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
5. 5.⚖️ 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
6. 6.🛟 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
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
9. 9.⚖️ 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
10. 10.🔦 Is a wooden board opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
11. 11.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
12. 12.🌍 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
13. 13.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) mark with chalk (c) sit in the shade (d) look straight at the Sun
14. 14.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
15. 15.🧺 Do we need a battery cell for the shadow clock? (a) needed (b) not needed
16. 16.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) coloured (b) smaller (c) brighter (d) bigger
17. 17.⚖️ 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) the same spot (c) shadow length
18. 18.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
19. 19.🔦 Which of these is transparent? (a) your hand (b) a brick (c) a wooden board (d) air
20. 20.🕰️ What is a sundial used for? (a) measuring rain (b) weighing things (c) telling the time (d) making rainbows
21. 21.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
22. 22.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
23. 23.True or false: a straight stick is needed for the shadow clock. (a) True (b) False
24. 24.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
25. 25.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
26. 26.⚖️ 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 same stick (d) the time of day
27. 27.⚖️ 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 stick (b) the time of day (c) shadow length (d) the same spot
28. 28.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a mirror (c) chalk to mark shadows (d) a sunny open place
30. 30.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
31. 31.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
32. 32.🔍 Which is the odd one out? (a) a steel plate (b) a book (c) a brick (d) frosted glass
33. 33.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a balloon (b) chalk to mark shadows (c) a straight stick (d) a clock to check
35. 35.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
36. 36.⚖️ 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) the stick kept upright (c) shadow length
37. 37.⚖️ 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
38. 38.🔍 Which is the odd one out? (a) air (b) clear glass (c) a book (d) clean water
39. 39.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a magnet (c) a balloon (d) a straight stick
40. 40.True or false: a mirror is needed for the shadow clock. (a) False (b) True

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