Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 47 · 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 is the odd one out? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) a dull brick
2. 2.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a dull brick (d) a mirror
3. 3.🔭 How many mirrors does a simple periscope use?
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 change it (c) we measure it
5. 5.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
6. 6.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a magnet (d) vinegar
8. 8.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) yeast (d) an empty juice carton
10. 10.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) black cloth (d) a rough wooden board
11. 11.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a mirror (d) a rough wooden board
12. 12.🔮 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
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
14. 14.True or false: a battery cell is not needed for the periscope. (a) False (b) True
15. 15.True or false: still clear water reflects light poorly. (a) False (b) True
16. 16.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a ruler (d) vinegar
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
24. 24.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a baker (d) a pilot in a plane
25. 25.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
26. 26.⚖️ 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) the angle of the mirrors (c) the same carton (d) the object we look at
27. 27.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a dull brick (d) black cloth
28. 28.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
31. 31.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
33. 33.True or false: vinegar is not needed for the periscope. (a) True (b) False
34. 34.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
36. 36.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it looks shiny (d) so it can float
38. 38.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) dark soil (d) a shiny steel plate
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a battery cell (c) sticky tape (d) a ruler
40. 40.⚖️ 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 light (c) how clear the view is

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