Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 921 · 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.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
2. 2.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a shiny steel plate
3. 3.⚖️ 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) False (b) True
4. 4.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
7. 7.🛟 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
8. 8.🔍 Which is the odd one out? (a) a dull brick (b) still clear water (c) a rough wooden board (d) black cloth
9. 9.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
10. 10.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a pencil (c) a balloon (d) yeast
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a battery cell (d) an empty juice carton
13. 13.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
15. 15.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
16. 16.🔭 How many mirrors does a simple periscope use?
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚖️ 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 light (c) the angle of the mirrors (d) the object we look at
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) yeast (c) a ruler (d) two small mirrors
22. 22.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
23. 23.🔭 How many times does light bounce off a mirror in a simple periscope?
24. 24.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) sticky tape (d) a balloon
25. 25.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) turmeric powder (d) a ruler
26. 26.⚖️ 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
27. 27.True or false: black cloth reflects light well. (a) True (b) False
28. 28.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a baker (d) a submarine crew
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) dark soil (d) still clear water
30. 30.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
31. 31.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
33. 33.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
37. 37.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) dark soil (d) a dull brick
39. 39.True or false: yeast is not needed for the periscope. (a) False (b) True
40. 40.🔭 Which of these reflects light poorly? (a) still clear water (b) a shiny steel plate (c) a dull brick (d) aluminium foil

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