Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 34 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) vinegar
2. 2.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) turmeric powder (d) a battery cell
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) aluminium foil (d) dark soil
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) sticky tape (d) two small mirrors
8. 8.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a pilot in a plane (d) a farmer
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
11. 11.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.True or false: a dull brick reflects light poorly. (a) True (b) False
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.⚖️ 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 same mirrors (c) the same carton (d) the angle of the mirrors
15. 15.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
16. 16.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) aluminium foil (d) a shiny steel plate
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
18. 18.⚖️ 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) the same carton (c) how clear the view is
19. 19.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) aluminium foil (d) a dull brick
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it can float (d) so it looks shiny
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
22. 22.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
23. 23.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) still clear water (d) dark soil
24. 24.True or false: sticky tape is needed for the periscope. (a) False (b) True
25. 25.True or false: a balloon is not needed for the periscope. (a) False (b) True
26. 26.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) a ruler (d) a pencil
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a battery cell (d) sticky tape
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
29. 29.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
30. 30.True or false: dark soil reflects light poorly. (a) True (b) False
31. 31.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a pencil
32. 32.⚖️ 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
33. 33.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a magnet (d) a battery cell
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
36. 36.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
37. 37.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) yeast (d) two small mirrors
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
39. 39.⚖️ 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 same light (c) the angle of the mirrors (d) how clear the view is
40. 40.True or false: a shiny steel plate reflects light poorly. (a) True (b) False

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