Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 545 · 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) chalk to mark shadows (c) a battery cell (d) a sunny open place
2. 2.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
3. 3.🧺 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 mirror
4. 4.True or false: a steel plate is translucent. (a) True (b) False
5. 5.True or false: a brick is translucent. (a) False (b) True
6. 6.True or false: butter paper is translucent. (a) False (b) True
7. 7.True or false: a clock to check is needed for the shadow clock. (a) True (b) False
8. 8.🔦 Is a book opaque, translucent or transparent? (a) transparent (b) opaque (c) translucent
9. 9.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) wear a cap (c) sit in the shade (d) look straight at the Sun
10. 10.🧺 Which of these is not needed for the shadow clock? (a) a sunny open place (b) a straight stick (c) a magnet (d) a clock to check
11. 11.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) missing (c) short (d) long
12. 12.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
13. 13.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) Earth keeps spinning (d) the stick walks
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same spot (b) shadow length (c) the time of day
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the stick kept upright (b) the time of day (c) shadow length (d) the same spot
17. 17.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
18. 18.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) yeast (d) a clock to check
19. 19.🔦 Which of these is translucent? (a) a brick (b) butter paper (c) a steel plate (d) a book
20. 20.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a straight stick (c) a clock to check (d) a balloon
21. 21.📘 Why does a shadow form? (a) the ground is dark (b) the object is cold (c) light bends round it (d) an object blocks light
22. 22.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a sunny open place (c) a straight stick (d) a battery cell
23. 23.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is the one thing we change. (a) True (b) False
24. 24.🧺 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) a magnet
25. 25.🔦 Is your hand opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
26. 26.🧺 Do we need chalk to mark shadows for the shadow clock? (a) not needed (b) needed
27. 27.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🔦 Is frosted glass opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
29. 29.True or false: clear plastic film is transparent. (a) False (b) True
30. 30.True or false: a balloon is not needed for the shadow clock. (a) False (b) True
31. 31.🕰️ What is a sundial used for? (a) telling the time (b) measuring rain (c) weighing things (d) making rainbows
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) tissue paper (b) air (c) clean water (d) clear glass
34. 34.🔦 Which of these is opaque? (a) a brick (b) butter paper (c) air (d) tissue paper
35. 35.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
36. 36.🔦 Which of these is opaque? (a) clean water (b) a steel plate (c) tissue paper (d) frosted glass
37. 37.🔦 Which of these is transparent? (a) a steel plate (b) tissue paper (c) a brick (d) clear glass
38. 38.⚖️ 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) the stick kept upright (d) the same spot
39. 39.True or false: turmeric powder is not needed for the shadow clock. (a) True (b) False
40. 40.⚖️ 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

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