Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 584 · 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.🔦 Is butter paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the time of day (c) the same stick
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) chalk to mark shadows (d) a clock to check
4. 4.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) an object blocks light (d) light bends round it
6. 6.🔦 Which of these is opaque? (a) butter paper (b) your hand (c) air (d) clean water
7. 7.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the stick kept upright is kept the same. (a) True (b) False
8. 8.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
9. 9.True or false: oily paper is opaque. (a) True (b) False
10. 10.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the stick kept upright (b) the time of day (c) shadow length
11. 11.True or false: air is transparent. (a) True (b) False
12. 12.🔦 Which of these is translucent? (a) air (b) oily paper (c) clear glass (d) a steel plate
13. 13.🔦 Which of these is opaque? (a) butter paper (b) a book (c) tissue paper (d) frosted glass
14. 14.⚖️ 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 same spot (c) the time of day (d) the stick kept upright
15. 15.True or false: a clock to check is not needed for the shadow clock. (a) True (b) False
16. 16.🧺 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) chalk to mark shadows
17. 17.🔦 Which of these is opaque? (a) clear plastic film (b) tissue paper (c) a brick (d) clear glass
18. 18.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) butter paper (d) air
19. 19.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
20. 20.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) shows two times (d) does not work well
21. 21.⚖️ 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) False (b) True
22. 22.True or false: a steel plate is opaque. (a) False (b) True
23. 23.⚖️ 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) True (b) False
24. 24.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
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 clock to check (d) a magnet
26. 26.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a battery cell (c) turmeric powder (d) a magnet
27. 27.🛟 What should you wear for a long time in the hot sun? (a) a woollen sweater (b) a raincoat (c) a cap or hat (d) nothing on your head
28. 28.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
29. 29.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Which of these is needed for the shadow clock? (a) a clock to check (b) a battery cell (c) a magnet (d) yeast
31. 31.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) turmeric powder (d) a mirror
32. 32.🔍 Which is the odd one out? (a) air (b) clean water (c) clear plastic film (d) oily paper
33. 33.🔍 Which is the odd one out? (a) a steel plate (b) air (c) your hand (d) a book
34. 34.🔦 Which of these is transparent? (a) a steel plate (b) butter paper (c) oily paper (d) clear glass
35. 35.🔦 Which of these is opaque? (a) butter paper (b) clear plastic film (c) a wooden board (d) tissue paper
36. 36.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
37. 37.🕰️ What is a sundial used for? (a) making rainbows (b) weighing things (c) measuring rain (d) telling the time
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Do we need a magnet for the shadow clock? (a) not needed (b) needed

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