Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 406 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil (d) two small mirrors
2. 2.🔭 Which of these reflects light well? (a) a dull brick (b) a mirror (c) black cloth (d) dark soil
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) sticky tape
4. 4.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
5. 5.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a ruler (c) a magnet (d) a balloon
6. 6.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
7. 7.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) turmeric powder (d) two small mirrors
8. 8.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a battery cell (d) two small mirrors
12. 12.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
13. 13.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) dark soil
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) turmeric powder (c) a pencil (d) two small mirrors
16. 16.True or false: still clear water reflects light well. (a) False (b) True
17. 17.True or false: turmeric powder is needed for the periscope. (a) True (b) False
18. 18.True or false: a battery cell is not needed for the periscope. (a) False (b) True
19. 19.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) aluminium foil (d) dark soil
21. 21.True or false: aluminium foil reflects light well. (a) False (b) True
22. 22.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) sticky tape (d) vinegar
23. 23.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.True or false: a mirror reflects light well. (a) True (b) False
25. 25.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
26. 26.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
27. 27.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) yeast (d) an empty juice carton
28. 28.True or false: dark soil reflects light well. (a) True (b) False
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
32. 32.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
33. 33.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a submarine crew (d) a farmer
34. 34.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
36. 36.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) a ruler (c) a pencil (d) sticky tape
39. 39.True or false: a magnet is not needed for the periscope. (a) False (b) True
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is

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