Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 788 · 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.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
2. 2.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) taller walls (d) the ground
3. 3.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a magnet (d) a pencil
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil (d) an empty juice carton
5. 5.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) in colour (d) upside down only
7. 7.⚖️ 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
8. 8.True or false: sticky tape is not needed for the periscope. (a) False (b) True
9. 9.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
10. 10.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) aluminium foil (d) a shiny steel plate
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
13. 13.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a balloon (d) a ruler
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.⚖️ 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 change it (c) we measure it
17. 17.True or false: still clear water reflects light poorly. (a) False (b) True
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.⚖️ 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 angle of the mirrors (c) the same carton (d) the same light
20. 20.⚖️ 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 change it (c) we measure it
21. 21.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
22. 22.🔭 How many times does light bounce off a mirror in a simple periscope?
23. 23.True or false: a mirror reflects light well. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) dark soil (d) a rough wooden board
25. 25.True or false: a rough wooden board reflects light poorly. (a) False (b) True
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a balloon (d) an empty juice carton
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) turmeric powder
28. 28.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same mirrors
29. 29.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a battery cell (d) a pencil
30. 30.True or false: black cloth reflects light poorly. (a) True (b) False
31. 31.True or false: a magnet is not needed for the periscope. (a) False (b) True
32. 32.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) vinegar (d) a battery cell
33. 33.🔭 Which of these reflects light poorly? (a) a mirror (b) dark soil (c) still clear water (d) a shiny steel plate
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) vinegar (d) two small mirrors
35. 35.⚖️ 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
36. 36.True or false: vinegar is needed for the periscope. (a) True (b) False
37. 37.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) two small mirrors (d) a pencil
40. 40.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a dull brick (d) aluminium foil

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