Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 598 · 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 your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
2. 2.True or false: a book is translucent. (a) True (b) False
3. 3.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) telling the time (d) weighing things
4. 4.📘 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
5. 5.🔦 Which of these is translucent? (a) butter paper (b) air (c) a brick (d) a book
6. 6.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) short (b) long (c) missing (d) round
7. 7.⚖️ 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
8. 8.🔦 Which of these is opaque? (a) clear plastic film (b) clear glass (c) a steel plate (d) frosted glass
9. 9.⚖️ 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 spot (b) the time of day (c) the same stick (d) the stick kept upright
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) a straight stick (d) a balloon
12. 12.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is what we measure. (a) False (b) True
13. 13.⚖️ 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 stick kept upright (c) the time of day
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a straight stick (c) a sunny open place (d) a clock to check
16. 16.🧺 Which of these is needed for the shadow clock? (a) a battery cell (b) a magnet (c) chalk to mark shadows (d) a mirror
17. 17.🔦 Which of these is opaque? (a) frosted glass (b) a book (c) tissue paper (d) air
18. 18.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
19. 19.🔦 Which of these is transparent? (a) tissue paper (b) your hand (c) a wooden board (d) clean water
20. 20.True or false: a sunny open place is not needed for the shadow clock. (a) True (b) False
21. 21.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a raincoat (c) a woollen sweater (d) nothing on your head
22. 22.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent
23. 23.True or false: a battery cell is not 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.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) a brick (b) butter paper (c) a wooden board (d) a book
27. 27.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a balloon (c) a straight stick (d) chalk to mark shadows
28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) shows two times (b) runs faster (c) works better (d) does not work well
29. 29.⚖️ 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
30. 30.True or false: yeast is needed for the shadow clock. (a) True (b) False
31. 31.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a magnet (d) chalk to mark shadows
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a wooden board (b) clear plastic film (c) clean water (d) clear glass
34. 34.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) a clock to check (c) a sunny open place (d) chalk to mark shadows
35. 35.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) a balloon (d) a mirror
36. 36.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
37. 37.True or false: clear plastic film is transparent. (a) False (b) True
38. 38.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) turmeric powder (c) a clock to check (d) a sunny open place
39. 39.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
40. 40.🔦 Which of these is translucent? (a) oily paper (b) a wooden board (c) clean water (d) a brick

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