Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 350 · 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? What do we do with “the object we look at”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) an empty juice carton (d) a pencil
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) yeast (d) a ruler
6. 6.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) still clear water
7. 7.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) sticky tape (d) a pencil
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) vinegar (c) a ruler (d) two small mirrors
10. 10.⚖️ 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) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the object we look at (c) the same light (d) the same carton
12. 12.True or false: aluminium foil reflects light well. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a mirror (d) still clear water
14. 14.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) sticky tape (d) a pencil
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same light (c) the object we look at (d) how clear the view is
16. 16.True or false: turmeric powder is needed for the periscope. (a) True (b) False
17. 17.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
18. 18.True or false: vinegar is needed for the periscope. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) aluminium foil (d) a shiny steel plate
20. 20.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) still clear water
21. 21.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) yeast (d) sticky tape
22. 22.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
23. 23.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
26. 26.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the periscope? (a) a ruler (b) a balloon (c) turmeric powder (d) a magnet
28. 28.True or false: sticky tape is not needed for the periscope. (a) False (b) True
29. 29.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) taller walls (c) only short walls (d) the ground
30. 30.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) turmeric powder (d) sticky tape
32. 32.True or false: a ruler is not needed for the periscope. (a) True (b) False
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
34. 34.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) a shiny steel plate (d) a mirror
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
37. 37.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
39. 39.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
40. 40.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed

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