Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 154 · 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? True or false: the same light is kept the same. (a) True (b) False
2. 2.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
3. 3.⚖️ 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) how clear the view is (c) the same mirrors
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
5. 5.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a submarine crew (d) a baker
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a battery cell (d) a ruler
7. 7.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a battery cell
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is (d) the same mirrors
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
12. 12.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) aluminium foil (d) still clear water
13. 13.True or false: vinegar is needed for the periscope. (a) True (b) False
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) vinegar
15. 15.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🔍 Which is the odd one out? (a) aluminium foil (b) black cloth (c) a mirror (d) still clear water
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) sticky tape
19. 19.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a rough wooden board
20. 20.⚖️ 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
21. 21.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
22. 22.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
23. 23.True or false: a mirror reflects light poorly. (a) True (b) False
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) broken glass bits (d) plastic safety mirrors
25. 25.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a magnet (d) two small mirrors
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
28. 28.True or false: a magnet is not needed for the periscope. (a) False (b) True
29. 29.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a shiny steel plate (d) a rough wooden board
30. 30.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
31. 31.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
32. 32.True or false: a pencil is not needed for the periscope. (a) False (b) True
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) a ruler
34. 34.🔮 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
35. 35.True or false: a pencil is needed for the periscope. (a) False (b) True
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) a ruler (c) sticky tape (d) two small mirrors
37. 37.⚖️ 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
38. 38.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) a battery cell (d) a ruler

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