Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 152 · 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.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is what we measure. (a) True (b) False
2. 2.🧺 Do we need a sunny open place for the shadow clock? (a) needed (b) not needed
3. 3.🔍 Which is the odd one out? (a) a steel plate (b) clean water (c) clear plastic film (d) air
4. 4.📘 Why does a shadow form? (a) the object is cold (b) an object blocks light (c) the ground is dark (d) light bends round it
5. 5.🔍 Which is the odd one out? (a) frosted glass (b) clear plastic film (c) clear glass (d) clean water
6. 6.🧺 Which of these is needed for the shadow clock? (a) a magnet (b) a sunny open place (c) yeast (d) a mirror
7. 7.🧺 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 mirror
8. 8.🔦 Which of these is translucent? (a) tissue paper (b) a steel plate (c) a brick (d) clear glass
9. 9.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) coloured (c) smaller (d) bigger
10. 10.⚖️ 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 stick kept upright (c) the same spot (d) the time of day
11. 11.⚖️ 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 time of day (c) the same spot
12. 12.🔮 Predict: on a fully cloudy day, the sundial ___. (a) works better (b) runs faster (c) does not work well (d) shows two times
13. 13.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🧺 Which of these is needed for the shadow clock? (a) a balloon (b) turmeric powder (c) a straight stick (d) a mirror
15. 15.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
16. 16.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same stick (b) shadow length (c) the time of day (d) the same spot
17. 17.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🛟 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
21. 21.⚖️ 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 time of day (c) the same stick
22. 22.True or false: yeast is not needed for the shadow clock. (a) True (b) False
23. 23.True or false: a balloon is not needed for the shadow clock. (a) True (b) False
24. 24.⚖️ 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
25. 25.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
26. 26.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) yeast (b) chalk to mark shadows (c) a clock to check (d) a straight stick
27. 27.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) west (d) up
28. 28.True or false: a magnet is needed for the shadow clock. (a) False (b) True
29. 29.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a balloon (d) a sunny open place
30. 30.🛟 What should you wear for a long time in the hot sun? (a) nothing on your head (b) a woollen sweater (c) a raincoat (d) a cap or hat
31. 31.🔦 Which of these is transparent? (a) frosted glass (b) a book (c) clear glass (d) butter paper
32. 32.🧺 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) turmeric powder (d) a clock to check
33. 33.True or false: clean water is opaque. (a) False (b) True
34. 34.🌍 Why does the stick’s shadow move during the day? (a) the ground slides (b) the stick walks (c) the stick grows (d) Earth keeps spinning
35. 35.True or false: yeast is needed for the shadow clock. (a) True (b) False
36. 36.⚖️ 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) True (b) False
37. 37.⚖️ 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
38. 38.🧺 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) chalk to mark shadows (d) a magnet
39. 39.True or false: clear plastic film is transparent. (a) True (b) False
40. 40.True or false: a straight stick is needed for the shadow clock. (a) True (b) False

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