Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 423 · 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.True or false: aluminium foil reflects light poorly. (a) True (b) False
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) turmeric powder
3. 3.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) aluminium foil
4. 4.🔭 What does a periscope let you do? (a) hear far sounds (b) see over a wall (c) see in the dark (d) see germs
5. 5.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) a ruler
6. 6.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) aluminium foil (d) a rough wooden board
7. 7.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a mirror (d) black cloth
9. 9.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a mirror
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
16. 16.True or false: a magnet is not needed for the periscope. (a) False (b) True
17. 17.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.True or false: dark soil reflects light well. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a mirror (d) aluminium foil
21. 21.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
22. 22.⚖️ 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) True (b) False
23. 23.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
24. 24.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) two small mirrors (d) an empty juice carton
26. 26.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) turmeric powder (d) sticky tape
27. 27.True or false: a balloon is needed for the periscope. (a) False (b) True
28. 28.True or false: a battery cell is needed for the periscope. (a) False (b) True
29. 29.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a dull brick (d) a shiny steel plate
30. 30.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) two small mirrors (d) turmeric powder
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.True or false: vinegar is not needed for the periscope. (a) True (b) False
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
36. 36.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
37. 37.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) dark soil (d) a mirror
38. 38.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) how clear the view is (c) the angle of the mirrors
40. 40.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed

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