Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 564 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) two small mirrors (d) sticky tape
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
3. 3.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
4. 4.🔭 How many mirrors does a simple periscope use?
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) False (b) True
6. 6.True or false: yeast is needed for the periscope. (a) False (b) True
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) a pencil
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
10. 10.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) dark soil (d) a dull brick
11. 11.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
12. 12.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
13. 13.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a balloon (d) vinegar
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the object we look at (c) how clear the view is (d) the same mirrors
15. 15.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
16. 16.True or false: a mirror reflects light well. (a) True (b) False
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a baker (c) a farmer (d) a submarine crew
20. 20.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) a ruler (d) yeast
21. 21.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
22. 22.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
23. 23.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) two small mirrors (d) an empty juice carton
25. 25.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a dull brick (d) black cloth
26. 26.🛟 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
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
28. 28.True or false: a magnet is not needed for the periscope. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
30. 30.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
31. 31.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
32. 32.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) a pencil
33. 33.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
34. 34.⚖️ 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
35. 35.True or false: sticky tape is not needed for the periscope. (a) False (b) True
36. 36.⚖️ 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 keep it the same (b) we change it (c) we measure it
37. 37.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a shiny steel plate (d) a mirror
38. 38.True or false: a battery cell is needed for the periscope. (a) True (b) False
39. 39.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) dark soil (d) a dull brick
40. 40.True or false: sticky tape is needed for the periscope. (a) False (b) True

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