Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 636 · 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.True or false: a brick is opaque. (a) False (b) True
2. 2.🧺 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
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.🔦 Is air opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
5. 5.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
6. 6.True or false: a balloon is needed for the shadow clock. (a) False (b) True
7. 7.🔦 Is clear plastic film opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
8. 8.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) west (b) north (c) up (d) east
9. 9.🔍 Which is the odd one out? (a) a wooden board (b) butter paper (c) oily paper (d) frosted glass
10. 10.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) tissue paper (d) a book
11. 11.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a sunny open place (c) a straight stick (d) a balloon
12. 12.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
13. 13.🛟 While watching shadows outdoors, what must you never do? (a) sit in the shade (b) look straight at the Sun (c) mark with chalk (d) wear a cap
14. 14.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a battery cell (c) turmeric powder (d) a clock to check
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) a clock to check (d) a balloon
16. 16.🔦 Is tissue paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
17. 17.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a raincoat (c) a cap or hat (d) a woollen sweater
18. 18.⚖️ 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 change it (c) we measure it
19. 19.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) bigger (d) coloured
20. 20.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) the time of day (b) the same spot (c) the stick kept upright (d) shadow length
21. 21.🔍 Which is the odd one out? (a) a book (b) air (c) a wooden board (d) a brick
22. 22.⚖️ 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
23. 23.True or false: yeast is needed for the shadow clock. (a) False (b) True
24. 24.🕰️ What is a sundial used for? (a) making rainbows (b) telling the time (c) weighing things (d) measuring rain
25. 25.⚖️ 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
26. 26.True or false: a straight stick is needed for the shadow clock. (a) False (b) True
27. 27.🔦 Which of these is transparent? (a) clear glass (b) oily paper (c) a brick (d) a book
28. 28.⚖️ 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
29. 29.🔦 Which of these is translucent? (a) a brick (b) air (c) frosted glass (d) clean water
30. 30.True or false: your hand is transparent. (a) True (b) False
31. 31.True or false: tissue paper is transparent. (a) True (b) False
32. 32.🧺 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) turmeric powder
33. 33.🔦 Which of these is opaque? (a) frosted glass (b) a brick (c) clean water (d) air
34. 34.📘 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
35. 35.⚖️ 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
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) shadow length (c) the same stick
37. 37.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) chalk to mark shadows (d) turmeric powder
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) a sunny open place (d) a battery cell
39. 39.🔦 Is your hand opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
40. 40.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) the stick grows (c) the ground slides (d) Earth keeps spinning

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