Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 999 · 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.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) two small mirrors (d) a pencil
3. 3.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
4. 4.True or false: aluminium foil reflects light well. (a) True (b) False
5. 5.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
6. 6.⚖️ 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) the same carton (c) how clear the view is
7. 7.⚖️ 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) the object we look at (c) how clear the view is
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
11. 11.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
12. 12.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
15. 15.True or false: a pencil is not needed for the periscope. (a) False (b) True
16. 16.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) a pencil (c) two small mirrors (d) an empty juice carton
17. 17.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a balloon (c) two small mirrors (d) an empty juice carton
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) a rough wooden board (d) black cloth
23. 23.🔭 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
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the object we look at (d) the same carton
25. 25.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
26. 26.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) a rough wooden board
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) sticky tape (d) turmeric powder
28. 28.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) two small mirrors (d) a magnet
29. 29.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
31. 31.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) yeast (d) a battery cell
32. 32.True or false: a ruler is needed for the periscope. (a) False (b) True
33. 33.True or false: yeast is needed for the periscope. (a) True (b) False
34. 34.True or false: dark soil reflects light well. (a) False (b) True
35. 35.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
36. 36.True or false: a mirror reflects light poorly. (a) True (b) False
37. 37.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🔭 How many times does light bounce off a mirror in a simple periscope?
40. 40.True or false: turmeric powder is not needed for the periscope. (a) True (b) False

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