Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 261 · 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) aluminium foil (b) a dull brick (c) a rough wooden board (d) black cloth
2. 2.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a balloon (c) a battery cell (d) vinegar
3. 3.🔭 How many times does light bounce off a mirror in a simple periscope?
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
7. 7.True or false: a rough wooden board reflects light well. (a) True (b) False
8. 8.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
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) the same light (d) how clear the view is
11. 11.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a balloon (d) two small mirrors
13. 13.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) turmeric powder
16. 16.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
17. 17.True or false: sticky tape is needed for the periscope. (a) True (b) False
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 light (b) the angle of the mirrors (c) how clear the view is (d) the same mirrors
19. 19.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
20. 20.🔭 Which of these reflects light poorly? (a) a dull brick (b) a mirror (c) still clear water (d) a shiny steel plate
21. 21.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
22. 22.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
25. 25.🔭 How many mirrors does a simple periscope use?
26. 26.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
27. 27.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) aluminium foil (d) a shiny steel plate
28. 28.True or false: aluminium foil reflects light well. (a) False (b) True
29. 29.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) a rough wooden board
30. 30.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
31. 31.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
33. 33.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) an empty juice carton (d) two small mirrors
34. 34.🔭 Which of these reflects light poorly? (a) aluminium foil (b) black cloth (c) a mirror (d) a shiny steel plate
35. 35.True or false: a battery cell is not needed for the periscope. (a) True (b) False
36. 36.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
37. 37.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
38. 38.⚖️ 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
39. 39.True or false: a pencil is needed for the periscope. (a) True (b) False
40. 40.⚖️ 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

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