Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 127 · 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? True or false: the object we look at is kept the same. (a) False (b) True
2. 2.True or false: a magnet is needed for the periscope. (a) True (b) False
3. 3.⚖️ 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) False (b) True
4. 4.True or false: a mirror reflects light poorly. (a) False (b) True
5. 5.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) a shiny steel plate (d) still clear water
6. 6.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a ruler (d) a magnet
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) sticky tape (d) two small mirrors
8. 8.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the angle of the mirrors (c) how clear the view is (d) the same mirrors
11. 11.True or false: two small mirrors is needed for the periscope. (a) False (b) True
12. 12.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) so it can float (d) to make it heavy
13. 13.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
14. 14.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.True or false: aluminium foil reflects light well. (a) False (b) True
16. 16.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) in colour (d) much bigger
17. 17.True or false: a pencil is needed for the periscope. (a) False (b) True
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
19. 19.True or false: still clear water reflects light well. (a) False (b) True
20. 20.⚖️ 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) True (b) False
21. 21.🔭 How many times does light bounce off a mirror in a simple periscope?
22. 22.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a pencil (c) an empty juice carton (d) two small mirrors
24. 24.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.⚖️ 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 mirrors (b) the same carton (c) the angle of the mirrors (d) the same light
26. 26.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a battery cell
27. 27.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
28. 28.True or false: a ruler is needed for the periscope. (a) True (b) False
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) two pictures (d) only darkness
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a pencil (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 reflects light well? (a) a rough wooden board (b) still clear water (c) dark soil (d) black cloth
33. 33.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
34. 34.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
35. 35.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) yeast (c) turmeric powder (d) vinegar
36. 36.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) turmeric powder (d) sticky tape
37. 37.True or false: a shiny steel plate reflects light well. (a) False (b) True
38. 38.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a magnet (d) an empty juice carton
40. 40.🧺 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

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