Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 42 · 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) a pencil (b) a magnet (c) sticky tape (d) a ruler
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
3. 3.🧺 Do we need yeast 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) much bigger (b) flipped left to right (c) in colour (d) upside down only
6. 6.True or false: sticky tape is not needed for the periscope. (a) False (b) True
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.True or false: a battery cell is needed for the periscope. (a) False (b) True
9. 9.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) vinegar (c) a magnet (d) sticky tape
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
13. 13.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) a pencil
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
16. 16.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
19. 19.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
20. 20.True or false: yeast is not needed for the periscope. (a) False (b) True
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
24. 24.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) still clear water (d) a shiny steel plate
27. 27.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a pencil (d) a balloon
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the same carton (c) the same light (d) the angle of the mirrors
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) turmeric powder (d) an empty juice carton
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) still clear water (d) dark soil
34. 34.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
35. 35.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) aluminium foil
36. 36.🔭 Which of these reflects light well? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) black cloth
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 keep it the same (b) we measure it (c) we change it
39. 39.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
40. 40.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) dark soil

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