Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 269 · 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) dark soil (b) a mirror (c) still clear water (d) a shiny steel plate
2. 2.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same carton (d) the same mirrors
4. 4.⚖️ 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
5. 5.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) a ruler (d) sticky tape
7. 7.True or false: a balloon is needed for the periscope. (a) True (b) False
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
9. 9.⚖️ 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
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
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) sticky tape (d) yeast
12. 12.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) a mirror
15. 15.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
16. 16.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
18. 18.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔮 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
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a battery cell
23. 23.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a mirror
24. 24.True or false: turmeric powder is needed for the periscope. (a) False (b) True
25. 25.True or false: a dull brick reflects light well. (a) False (b) True
26. 26.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
27. 27.⚖️ 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
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
29. 29.⚖️ 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
30. 30.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) yeast (d) two small mirrors
33. 33.⚖️ 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) how clear the view is (c) the same carton
34. 34.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) still clear water (d) dark soil
35. 35.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) a pencil (d) yeast
36. 36.True or false: still clear water reflects light poorly. (a) False (b) True
37. 37.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
40. 40.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) a mirror (d) aluminium foil

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