Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 932 · 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? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors
2. 2.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a mirror (d) a shiny steel plate
3. 3.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
4. 4.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
5. 5.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
6. 6.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) two small mirrors (c) a pencil (d) sticky tape
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) much bigger (d) flipped left to right
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) loose glass panes (d) big wall mirrors
10. 10.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
11. 11.True or false: a magnet is not needed for the periscope. (a) True (b) False
12. 12.🔮 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
13. 13.⚖️ 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 object we look at
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) turmeric powder (d) sticky tape
15. 15.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a magnet
17. 17.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
18. 18.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a battery cell (d) a pencil
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) yeast (d) a pencil
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
26. 26.True or false: a rough wooden board reflects light poorly. (a) False (b) True
27. 27.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
28. 28.True or false: still clear water reflects light well. (a) False (b) True
29. 29.⚖️ 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 carton (c) the object we look at (d) how clear the view is
30. 30.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
31. 31.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a dull brick (d) aluminium foil
32. 32.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) a battery cell (d) yeast
34. 34.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) dark soil (d) a rough wooden board
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a balloon (d) two small mirrors
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy

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