Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 385 · 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 mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
2. 2.True or false: vinegar is not needed for the periscope. (a) False (b) True
3. 3.🔭 How many mirrors does a simple periscope use?
4. 4.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a baker (d) a farmer
5. 5.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) dark soil (d) a rough wooden board
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
8. 8.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) aluminium foil (d) still clear water
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) yeast (d) sticky tape
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) still clear water
13. 13.True or false: dark soil reflects light well. (a) False (b) True
14. 14.⚖️ 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
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) a mirror
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) sticky tape (d) a pencil
18. 18.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) a ruler (d) sticky tape
20. 20.True or false: aluminium foil reflects light well. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) still clear water (d) a dull brick
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same carton
23. 23.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) sticky tape (d) a ruler
24. 24.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
25. 25.🧺 Which of these is not needed for the periscope? (a) a magnet (b) two small mirrors (c) a ruler (d) sticky tape
26. 26.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
27. 27.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same light (c) the angle of the mirrors
29. 29.True or false: a rough wooden board reflects light well. (a) False (b) True
30. 30.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
33. 33.🔭 Which of these reflects light poorly? (a) dark soil (b) aluminium foil (c) still clear water (d) a mirror
34. 34.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) yeast (d) two small mirrors
35. 35.🔭 Which of these reflects light well? (a) a dull brick (b) aluminium foil (c) dark soil (d) black cloth
36. 36.⚖️ 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 same mirrors (c) the angle of the mirrors (d) the same light
37. 37.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
38. 38.True or false: two small mirrors is needed for the periscope. (a) False (b) True
39. 39.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) a magnet (d) turmeric powder
40. 40.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child

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