Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 160 · 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 what we measure? (a) the angle of the mirrors (b) the object we look at (c) the same mirrors (d) how clear the view is
2. 2.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) an empty juice carton (d) a balloon
4. 4.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a rough wooden board
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) an empty juice carton (d) two small mirrors
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) dark soil (d) a dull brick
9. 9.⚖️ 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 mirrors (c) how clear the view is
10. 10.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
11. 11.🔮 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
12. 12.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
13. 13.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) a rough wooden board
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
15. 15.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a dull brick
16. 16.True or false: a mirror reflects light well. (a) False (b) True
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.⚖️ 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
22. 22.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
23. 23.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) dark soil
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) broken glass bits (d) loose glass panes
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
29. 29.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) two small mirrors (d) turmeric powder
30. 30.True or false: sticky tape is not needed for the periscope. (a) True (b) False
31. 31.True or false: dark soil reflects light well. (a) True (b) False
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) False (b) True
33. 33.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) an empty juice carton (d) a battery cell
35. 35.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a baker (c) a pilot in a plane (d) a submarine crew
36. 36.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
37. 37.True or false: a magnet is needed for the periscope. (a) False (b) True
38. 38.⚖️ 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 light (c) the angle of the mirrors (d) the same carton
39. 39.True or false: a rough wooden board reflects light poorly. (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 same mirrors”? (a) we measure it (b) we change it (c) we keep it the same

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