Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 900 · 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.⚖️ 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
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a ruler (d) two small mirrors
3. 3.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a rough wooden board
6. 6.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) two small mirrors (d) an empty juice carton
8. 8.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
9. 9.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) still clear water
10. 10.True or false: a dull brick reflects light poorly. (a) False (b) True
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so it looks shiny (d) so light reaches the eye
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
13. 13.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
14. 14.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) aluminium foil (d) black cloth
15. 15.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a ruler (c) turmeric powder (d) vinegar
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
17. 17.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) still clear water
18. 18.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a rough wooden board (d) a shiny steel plate
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) sticky tape
20. 20.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a pencil (d) turmeric powder
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a magnet (c) an empty juice carton (d) a pencil
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.True or false: black cloth reflects light poorly. (a) True (b) False
24. 24.True or false: a battery cell is needed for the periscope. (a) True (b) False
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
26. 26.True or false: sticky tape is needed for the periscope. (a) False (b) True
27. 27.🔭 How many times does light bounce off a mirror in a simple periscope?
28. 28.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
29. 29.⚖️ 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
30. 30.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
32. 32.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a shiny steel plate
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ 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 light (b) how clear the view is (c) the same carton (d) the angle of the mirrors
36. 36.True or false: aluminium foil reflects light well. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) dark soil
38. 38.True or false: black cloth reflects light well. (a) False (b) True
39. 39.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
40. 40.True or false: two small mirrors is needed for the periscope. (a) True (b) False

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