Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 630 · 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.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) yeast (c) a balloon (d) turmeric powder
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
5. 5.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) vinegar (d) a balloon
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
7. 7.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the angle of the mirrors (d) the object we look at
9. 9.True or false: a pencil is needed for the periscope. (a) True (b) False
10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) a ruler (d) a magnet
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) yeast (d) two small mirrors
14. 14.True or false: aluminium foil reflects light well. (a) False (b) True
15. 15.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a balloon
16. 16.🔭 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 can float (d) so it looks shiny
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
19. 19.⚖️ 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) False (b) True
20. 20.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a battery cell (d) a ruler
22. 22.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
23. 23.True or false: sticky tape is not needed for the periscope. (a) True (b) False
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🔭 Which of these reflects light well? (a) aluminium foil (b) a dull brick (c) black cloth (d) a rough wooden board
26. 26.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a magnet
27. 27.🔮 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
28. 28.🔭 How many mirrors does a simple periscope use?
29. 29.True or false: black cloth reflects light poorly. (a) False (b) True
30. 30.⚖️ 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
31. 31.True or false: a rough wooden board reflects light poorly. (a) False (b) True
32. 32.True or false: turmeric powder is needed for the periscope. (a) True (b) False
33. 33.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
34. 34.True or false: dark soil reflects light poorly. (a) False (b) True
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
36. 36.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
38. 38.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) evaporation (d) reflection
39. 39.True or false: still clear water reflects light poorly. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) still clear water (d) a shiny steel plate

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