Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 422 · 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 of these reflects light well? (a) aluminium foil (b) dark soil (c) black cloth (d) a rough wooden board
2. 2.True or false: turmeric powder is needed for the periscope. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) still clear water (d) aluminium foil
4. 4.⚖️ 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
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.🔭 Does black cloth 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 magnet (b) an empty juice carton (c) a pencil (d) sticky tape
8. 8.🔮 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
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) still clear water (d) a rough wooden board
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) two small mirrors (d) a pencil
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
16. 16.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
17. 17.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
19. 19.🧺 Which of these is needed for the periscope? (a) a ruler (b) a magnet (c) a battery cell (d) vinegar
20. 20.True or false: vinegar is needed for the periscope. (a) False (b) True
21. 21.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
22. 22.True or false: a shiny steel plate reflects light well. (a) True (b) False
23. 23.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
26. 26.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) two small mirrors (d) a battery cell
27. 27.🔭 How many mirrors does a simple periscope use?
28. 28.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) still clear water (c) a mirror (d) a shiny steel plate
29. 29.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) a mirror
30. 30.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) sticky tape
31. 31.True or false: a battery cell is not needed for the periscope. (a) False (b) True
32. 32.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) a pencil (d) an empty juice carton
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.⚖️ 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 same light (c) how clear the view is (d) the object we look at
35. 35.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a balloon (d) sticky tape
38. 38.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a rough wooden board (d) dark soil
39. 39.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) a dull brick
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) vinegar

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