Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 971 · 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 same light”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) an empty juice carton (d) turmeric powder
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
8. 8.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
9. 9.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
10. 10.True or false: a battery cell is needed for the periscope. (a) False (b) True
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) vinegar
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) two small mirrors (c) an empty juice carton (d) a pencil
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
15. 15.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) a rough wooden board (d) a mirror
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) a battery cell
17. 17.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
18. 18.⚖️ 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 carton (b) how clear the view is (c) the angle of the mirrors (d) the same light
19. 19.🛟 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
20. 20.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) dark soil (d) a mirror
21. 21.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) a mirror (d) dark soil
22. 22.True or false: two small mirrors is needed for the periscope. (a) False (b) True
23. 23.🔮 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
24. 24.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) the same carton (d) how clear the view is
27. 27.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
29. 29.True or false: a rough wooden board reflects light poorly. (a) False (b) True
30. 30.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.True or false: turmeric powder is needed for the periscope. (a) False (b) True
33. 33.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) two small mirrors (d) a ruler
34. 34.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) a rough wooden board (d) still clear water
35. 35.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
36. 36.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
38. 38.True or false: yeast is needed for the periscope. (a) True (b) False
39. 39.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
40. 40.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) an empty juice carton (d) a battery cell

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