Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 62 · 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.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
2. 2.⚖️ 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 object we look at (c) the angle of the mirrors
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.True or false: still clear water reflects light well. (a) True (b) False
5. 5.True or false: aluminium foil reflects light poorly. (a) True (b) False
6. 6.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
7. 7.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) turmeric powder
10. 10.True or false: sticky tape is needed for the periscope. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
12. 12.🧺 Which of these is not needed for the periscope? (a) a magnet (b) sticky tape (c) a pencil (d) an empty juice carton
13. 13.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same carton (d) the same light
15. 15.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
16. 16.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) a shiny steel plate
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
19. 19.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a battery cell (c) vinegar (d) yeast
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a magnet (d) two small mirrors
21. 21.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
22. 22.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🧺 Which of these is needed for the periscope? (a) vinegar (b) two small mirrors (c) a magnet (d) a balloon
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.⚖️ 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
26. 26.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
27. 27.🔭 Which of these reflects light poorly? (a) still clear water (b) a dull brick (c) aluminium foil (d) a mirror
28. 28.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a balloon (d) sticky tape
29. 29.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) black cloth
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.True or false: a shiny steel plate reflects light well. (a) False (b) True
32. 32.True or false: yeast is needed for the periscope. (a) True (b) False
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
35. 35.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) an empty juice carton (d) two small mirrors
37. 37.True or false: a balloon is not needed for the periscope. (a) False (b) True
38. 38.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
39. 39.🧺 Which of these is not needed for the periscope? (a) a balloon (b) two small mirrors (c) a pencil (d) sticky tape
40. 40.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a dull brick (d) dark soil

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