Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 140 · 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) dark soil (b) aluminium foil (c) a rough wooden board (d) a dull brick
2. 2.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) still clear water (d) a dull brick
4. 4.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) dark soil (d) aluminium foil
5. 5.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
6. 6.🔭 Which of these reflects light poorly? (a) dark soil (b) still clear water (c) a shiny steel plate (d) a mirror
7. 7.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.True or false: a shiny steel plate reflects light well. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a mirror (d) still clear water
14. 14.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
16. 16.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
18. 18.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) dark soil (d) a rough wooden board
19. 19.🧺 Which of these is needed for the periscope? (a) a battery cell (b) an empty juice carton (c) vinegar (d) turmeric powder
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
22. 22.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) a shiny steel plate
23. 23.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a battery cell
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
27. 27.True or false: sticky tape is not needed for the periscope. (a) False (b) True
28. 28.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) sticky tape (c) vinegar (d) a magnet
30. 30.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
31. 31.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) a balloon
33. 33.🧺 Which of these is not needed for the periscope? (a) a ruler (b) sticky tape (c) turmeric powder (d) a pencil
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same carton (c) how clear the view is (d) the same light
35. 35.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a magnet (d) an empty juice carton
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 carton (b) how clear the view is (c) the angle of the mirrors
37. 37.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a ruler (d) a magnet
38. 38.⚖️ 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
39. 39.True or false: yeast is needed for the periscope. (a) True (b) False
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a ruler (d) a magnet

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