Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 47 · 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 not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a battery cell (d) a clock to check
2. 2.🔍 Which is the odd one out? (a) clear plastic film (b) your hand (c) a brick (d) a steel plate
3. 3.True or false: a wooden board is translucent. (a) False (b) True
4. 4.🔦 Is a steel plate opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
5. 5.📘 Why does a shadow form? (a) the object is cold (b) the ground is dark (c) an object blocks light (d) light bends round it
6. 6.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) does not work well (c) runs faster (d) shows two times
7. 7.True or false: a sunny open place is needed for the shadow clock. (a) False (b) True
8. 8.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) chalk to mark shadows (b) a balloon (c) a straight stick (d) a sunny open place
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) north (d) up
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 spot (c) the same stick (d) the time of day
12. 12.🔦 Is tissue paper opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
13. 13.🧺 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) a sunny open place (d) a mirror
14. 14.True or false: tissue paper is translucent. (a) False (b) True
15. 15.🔦 Which of these is translucent? (a) your hand (b) a wooden board (c) clear plastic film (d) frosted glass
16. 16.True or false: clear glass is transparent. (a) False (b) True
17. 17.⚖️ 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 same spot (c) the stick kept upright (d) the same stick
18. 18.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
19. 19.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) mark with chalk (c) look straight at the Sun (d) wear a cap
20. 20.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) a mirror (c) a magnet (d) chalk to mark shadows
21. 21.🔍 Which is the odd one out? (a) oily paper (b) clean water (c) air (d) clear plastic film
22. 22.🔦 Is frosted glass opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
23. 23.True or false: a battery cell is not needed for the shadow clock. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🧺 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 battery cell (d) chalk to mark shadows
27. 27.True or false: a magnet is not needed for the shadow clock. (a) True (b) False
28. 28.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
29. 29.🧺 Do we need a balloon for the shadow clock? (a) needed (b) not needed
30. 30.⚖️ 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 spot
31. 31.🔦 Which of these is transparent? (a) butter paper (b) clear plastic film (c) tissue paper (d) a brick
32. 32.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a sunny open place (c) a mirror (d) a clock to check
34. 34.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) smaller (b) brighter (c) coloured (d) bigger
36. 36.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) a sunny open place (d) a straight stick
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is kept the same. (a) False (b) True
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) the time of day (c) shadow length
39. 39.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
40. 40.True or false: your hand is translucent. (a) True (b) False

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