Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 348 · 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.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
2. 2.True or false: a mirror reflects light poorly. (a) True (b) False
3. 3.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) aluminium foil
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
8. 8.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
11. 11.True or false: two small mirrors is needed for the periscope. (a) False (b) True
12. 12.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
15. 15.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
16. 16.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) a rough wooden board (d) dark soil
17. 17.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
18. 18.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) turmeric powder (d) an empty juice carton
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) a shiny steel plate (d) dark soil
23. 23.True or false: a battery cell is needed for the periscope. (a) True (b) False
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
25. 25.True or false: sticky tape is not needed for the periscope. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) still clear water (d) a rough wooden board
27. 27.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) an empty juice carton (d) vinegar
28. 28.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
30. 30.True or false: a battery cell is not needed for the periscope. (a) True (b) False
31. 31.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.True or false: a dull brick reflects light poorly. (a) False (b) True
33. 33.True or false: vinegar is needed for the periscope. (a) False (b) True
34. 34.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
36. 36.True or false: a mirror reflects light well. (a) False (b) True
37. 37.True or false: a magnet is not needed for the periscope. (a) False (b) True
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
40. 40.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a dull brick (d) a shiny steel plate

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