Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 793 · 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.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) turmeric powder (b) a straight stick (c) a sunny open place (d) a clock to check
2. 2.⚖️ 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 stick kept upright (c) the same spot (d) the time of day
3. 3.🔦 Which of these is translucent? (a) tissue paper (b) clear glass (c) clean water (d) a wooden board
4. 4.🧺 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 clock to check
5. 5.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a magnet (c) chalk to mark shadows (d) a sunny open place
6. 6.🧺 Do we need a straight stick for the shadow clock? (a) not needed (b) needed
7. 7.⚖️ 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) shadow length (c) the time of day
8. 8.🧺 Which of these is needed for the shadow clock? (a) chalk to mark shadows (b) a magnet (c) yeast (d) a balloon
9. 9.🔦 Which of these is opaque? (a) tissue paper (b) clean water (c) a brick (d) frosted glass
10. 10.⚖️ 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
11. 11.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) east (b) north (c) west (d) up
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a clock to check (b) a battery cell (c) a straight stick (d) chalk to mark shadows
14. 14.🧺 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 balloon (d) chalk to mark shadows
15. 15.🕰️ What is a sundial used for? (a) making rainbows (b) measuring rain (c) weighing things (d) telling the time
16. 16.🛟 What should you wear for a long time in the hot sun? (a) a cap or hat (b) nothing on your head (c) a raincoat (d) a woollen sweater
17. 17.🔦 Which of these is opaque? (a) frosted glass (b) a wooden board (c) tissue paper (d) butter paper
18. 18.True or false: oily paper is opaque. (a) True (b) False
19. 19.🔦 Which of these is transparent? (a) a brick (b) clear plastic film (c) frosted glass (d) your hand
20. 20.⚖️ 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
21. 21.🔦 Is a steel plate opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
22. 22.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) round (b) short (c) long (d) missing
23. 23.🔦 Is butter paper opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque
24. 24.🔍 Which is the odd one out? (a) clean water (b) air (c) oily paper (d) clear glass
25. 25.⚖️ 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
26. 26.📘 Why does a shadow form? (a) light bends round it (b) the ground is dark (c) the object is cold (d) an object blocks light
27. 27.True or false: air is opaque. (a) False (b) True
28. 28.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) Earth keeps spinning (d) the stick grows
29. 29.🔦 Which of these is translucent? (a) clear plastic film (b) a wooden board (c) clear glass (d) butter paper
30. 30.🔦 Is a wooden board opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
31. 31.True or false: a straight stick is not needed for the shadow clock. (a) False (b) True
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is kept the same. (a) True (b) False
33. 33.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
34. 34.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
35. 35.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) bigger (b) smaller (c) coloured (d) brighter
36. 36.⚖️ 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 keep it the same (c) we change it
37. 37.True or false: a battery cell is not needed for the shadow clock. (a) False (b) True
38. 38.🧺 Which of these is not needed for the shadow clock? (a) a clock to check (b) a straight stick (c) chalk to mark shadows (d) a balloon
39. 39.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) works better (c) runs faster (d) shows two times
40. 40.🔦 Is clean water opaque, translucent or transparent? (a) transparent (b) translucent (c) opaque

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