Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 655 · 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 of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a battery cell (d) a pencil
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) a pencil (d) turmeric powder
4. 4.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a ruler
6. 6.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
9. 9.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
10. 10.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
11. 11.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) a magnet (d) a balloon
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a brighter view (c) a rainbow (d) two pictures
13. 13.🛟 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
14. 14.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) a pencil (d) a ruler
16. 16.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) a mirror (d) aluminium foil
17. 17.True or false: vinegar is not needed for the periscope. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
19. 19.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) still clear water (d) a dull brick
20. 20.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
21. 21.⚖️ 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 measure it (c) we change it
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
25. 25.True or false: a dull brick reflects light poorly. (a) False (b) True
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) two small mirrors (d) an empty juice carton
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
28. 28.True or false: a rough wooden board reflects light poorly. (a) True (b) False
29. 29.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) to make it heavy (c) so light reaches the eye (d) so it can float
30. 30.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) the Sun (d) a tree
32. 32.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) yeast (c) a ruler (d) a pencil
33. 33.True or false: a dull brick reflects light well. (a) False (b) True
34. 34.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a balloon (d) an empty juice carton
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? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
37. 37.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
38. 38.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 180 degrees (d) 45 degrees
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the object we look at (c) the same mirrors (d) the same light
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) turmeric powder (d) a pencil

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