Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 261 · 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.📘 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
2. 2.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is kept the same. (a) True (b) False
3. 3.⚖️ 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) False (b) True
4. 4.True or false: a wooden board is transparent. (a) True (b) False
5. 5.⚖️ 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 stick kept upright (d) the time of day
6. 6.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) west (c) north (d) up
7. 7.🧺 Do we need a mirror for the shadow clock? (a) not needed (b) needed
8. 8.True or false: a straight stick is not needed for the shadow clock. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) chalk to mark shadows (c) a clock to check (d) a straight stick
11. 11.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) a clock to check (c) a magnet (d) a sunny open place
12. 12.True or false: a mirror is not needed for the shadow clock. (a) False (b) True
13. 13.🧺 Do we need a magnet for the shadow clock? (a) needed (b) not needed
14. 14.⚖️ 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 same stick (c) the time of day
15. 15.🛟 While watching shadows outdoors, what must you never do? (a) wear a cap (b) look straight at the Sun (c) mark with chalk (d) sit in the shade
16. 16.True or false: clean water is opaque. (a) False (b) True
17. 17.🧺 Which of these is needed for the shadow clock? (a) yeast (b) a magnet (c) chalk to mark shadows (d) a battery cell
18. 18.🔍 Which is the odd one out? (a) a wooden board (b) a steel plate (c) a brick (d) clean water
19. 19.🔦 Is a wooden board opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
20. 20.🧺 Do we need a battery cell for the shadow clock? (a) not needed (b) needed
21. 21.🌍 Why does the stick’s shadow move during the day? (a) Earth keeps spinning (b) the stick walks (c) the stick grows (d) the ground slides
22. 22.True or false: your hand is translucent. (a) True (b) False
23. 23.True or false: frosted glass is translucent. (a) False (b) True
24. 24.⚖️ 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
25. 25.True or false: your hand is transparent. (a) False (b) True
26. 26.⚖️ 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
27. 27.🔍 Which is the odd one out? (a) frosted glass (b) tissue paper (c) oily paper (d) air
28. 28.⚖️ 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) shadow length
29. 29.True or false: your hand is opaque. (a) False (b) True
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) a woollen sweater (c) nothing on your head (d) a raincoat
32. 32.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a straight stick (c) chalk to mark shadows (d) a battery cell
33. 33.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) long (b) missing (c) round (d) short
34. 34.True or false: a magnet is needed for the shadow clock. (a) True (b) False
35. 35.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
36. 36.🧺 Which of these is not needed for the shadow clock? (a) a balloon (b) a straight stick (c) a sunny open place (d) a clock to check
37. 37.🌞 When is a stick’s shadow the shortest? (a) around noon (b) early morning (c) at night (d) late evening
38. 38.🔍 Which is the odd one out? (a) frosted glass (b) oily paper (c) butter paper (d) a steel plate
39. 39.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
40. 40.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) shows two times (c) does not work well (d) runs faster

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