Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 496 · 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.True or false: still clear water reflects light well. (a) False (b) True
2. 2.True or false: dark soil reflects light poorly. (a) False (b) True
3. 3.🔮 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
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
5. 5.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
6. 6.⚖️ 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 carton (b) the object we look at (c) the angle of the mirrors (d) the same light
7. 7.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) a dull brick
11. 11.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) a ruler (d) a balloon
12. 12.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
13. 13.True or false: aluminium foil reflects light poorly. (a) False (b) True
14. 14.True or false: a battery cell is not needed for the periscope. (a) False (b) True
15. 15.⚖️ 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
16. 16.⚖️ 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 object we look at (c) the same carton (d) the angle of the mirrors
17. 17.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
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 object we look at (c) how clear the view is
19. 19.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) a magnet (d) sticky tape
20. 20.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
22. 22.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) dark soil (d) a mirror
23. 23.True or false: two small mirrors is needed for the periscope. (a) True (b) False
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a ruler (d) a battery cell
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) sticky tape (d) a balloon
27. 27.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
28. 28.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
30. 30.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
31. 31.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a magnet (d) two small mirrors
32. 32.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) aluminium foil (d) a mirror
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) still clear water (d) a dull brick
37. 37.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
38. 38.True or false: a mirror reflects light poorly. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) a dull brick
40. 40.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) vinegar

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