Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 458 · 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? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a ruler (d) a balloon
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
4. 4.True or false: sticky tape is not needed for the periscope. (a) True (b) False
5. 5.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
8. 8.🔮 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
9. 9.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) a mirror
10. 10.⚖️ 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
11. 11.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
12. 12.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
13. 13.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
14. 14.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
15. 15.True or false: dark soil reflects light poorly. (a) True (b) False
16. 16.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
17. 17.⚖️ 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 keep it the same (c) we change it
18. 18.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) yeast (d) sticky tape
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
22. 22.True or false: aluminium foil reflects light poorly. (a) False (b) True
23. 23.True or false: yeast is not needed for the periscope. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) dark soil (b) aluminium foil (c) a mirror (d) a shiny steel plate
25. 25.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
26. 26.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) black cloth
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) two small mirrors (d) sticky tape
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
29. 29.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
30. 30.🔍 Which is the odd one out? (a) a mirror (b) a rough wooden board (c) still clear water (d) aluminium foil
31. 31.True or false: black cloth reflects light well. (a) True (b) False
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) vinegar
33. 33.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
34. 34.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
35. 35.True or false: a battery cell is not needed for the periscope. (a) True (b) False
36. 36.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) an empty juice carton (d) vinegar
38. 38.True or false: a dull brick reflects light well. (a) True (b) False
39. 39.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.⚖️ 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

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