Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 628 · 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) a shiny steel plate (b) still clear water (c) black cloth (d) aluminium foil
2. 2.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
3. 3.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
4. 4.🔭 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
5. 5.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
6. 6.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) a mirror (d) a rough wooden board
7. 7.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) turmeric powder (d) sticky tape
8. 8.True or false: a dull brick reflects light poorly. (a) True (b) False
9. 9.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a balloon (c) an empty juice carton (d) turmeric powder
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the object we look at
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
12. 12.🧺 Which of these is needed for the periscope? (a) a pencil (b) a magnet (c) a balloon (d) vinegar
13. 13.🔭 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
14. 14.⚖️ 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 keep it the same (b) we measure it (c) we change it
15. 15.True or false: two small mirrors is needed for the periscope. (a) False (b) True
16. 16.True or false: black cloth reflects light poorly. (a) True (b) False
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
18. 18.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a magnet (c) a pencil (d) a ruler
19. 19.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) aluminium foil
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the same mirrors
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) turmeric powder (d) sticky tape
22. 22.True or false: a ruler is needed for the periscope. (a) True (b) False
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) an empty juice carton (d) vinegar
24. 24.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) two small mirrors (c) sticky tape (d) a pencil
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a mirror (d) dark soil
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a pencil (d) a balloon
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
29. 29.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) dark soil (d) a dull brick
30. 30.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
31. 31.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
32. 32.True or false: yeast is not needed for the periscope. (a) False (b) True
33. 33.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) vinegar (d) sticky tape
34. 34.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) aluminium foil (d) a mirror
36. 36.⚖️ 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
37. 37.True or false: a shiny steel plate reflects light well. (a) True (b) False
38. 38.True or false: a magnet is not needed for the periscope. (a) False (b) True
39. 39.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) dark soil (d) a rough wooden board
40. 40.⚖️ 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

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