Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 375 · 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.🧺 Do we need a clock to check for the shadow clock? (a) not needed (b) needed
2. 2.🔦 Which of these is opaque? (a) butter paper (b) tissue paper (c) air (d) a book
3. 3.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) a sunny open place (d) chalk to mark shadows
5. 5.🔦 Is a steel plate opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
6. 6.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
7. 7.True or false: a steel plate is transparent. (a) True (b) False
8. 8.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) a raincoat (d) nothing on your head
9. 9.🧺 Which of these is needed for the shadow clock? (a) a mirror (b) a balloon (c) yeast (d) chalk to mark shadows
10. 10.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) a mirror (d) a battery cell
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False
12. 12.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) butter paper (b) frosted glass (c) clear plastic film (d) oily paper
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a balloon (c) a sunny open place (d) a straight stick
17. 17.📘 Why does a shadow form? (a) the ground is dark (b) light bends round it (c) an object blocks light (d) the object is cold
18. 18.True or false: tissue paper is translucent. (a) True (b) False
19. 19.🔦 Which of these is opaque? (a) clear plastic film (b) a brick (c) air (d) oily paper
20. 20.⚖️ 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 same spot (c) the time of day (d) shadow length
21. 21.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a sunny open place (c) a clock to check (d) yeast
22. 22.🔦 Which of these is transparent? (a) tissue paper (b) a book (c) a brick (d) clear plastic film
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) up (d) north
25. 25.🧺 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 sunny open place
26. 26.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick grows (c) the stick walks (d) Earth keeps spinning
28. 28.🔮 Predict: on a fully cloudy day, the sundial ___. (a) runs faster (b) works better (c) does not work well (d) shows two times
29. 29.🔦 Is your hand opaque, translucent or transparent? (a) opaque (b) translucent (c) transparent
30. 30.True or false: a book is opaque. (a) False (b) True
31. 31.True or false: a brick is translucent. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a brick (b) frosted glass (c) your hand (d) a book
33. 33.🔦 Which of these is translucent? (a) a book (b) frosted glass (c) your hand (d) clean water
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the time of day (c) the same spot (d) the stick kept upright
35. 35.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
36. 36.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
37. 37.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
38. 38.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
39. 39.🧺 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) turmeric powder
40. 40.True or false: a clock to check is not needed for the shadow clock. (a) False (b) True

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