Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 477 · 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.True or false: a magnet is not needed for the periscope. (a) False (b) True
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) sticky tape (d) a magnet
3. 3.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🧺 Which of these is needed for the periscope? (a) yeast (b) two small mirrors (c) a battery cell (d) turmeric powder
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
9. 9.🔭 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
10. 10.True or false: still clear water reflects light poorly. (a) False (b) True
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
12. 12.🛟 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
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
14. 14.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) sticky tape (d) a pencil
16. 16.🧺 Which of these is needed for the periscope? (a) a battery cell (b) yeast (c) vinegar (d) a pencil
17. 17.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) aluminium foil
18. 18.True or false: a balloon is not needed for the periscope. (a) True (b) False
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) an empty juice carton (d) a balloon
20. 20.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a ruler (d) turmeric powder
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
23. 23.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
24. 24.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) sticky tape (d) yeast
27. 27.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a mirror (d) a rough wooden board
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) a battery cell (d) an empty juice carton
29. 29.🔭 How many mirrors does a simple periscope use?
30. 30.True or false: still clear water reflects light well. (a) False (b) True
31. 31.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see germs (d) see in the dark
32. 32.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) black cloth (d) a rough wooden board
34. 34.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
35. 35.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) a dull brick
36. 36.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) a mirror (d) black cloth
39. 39.⚖️ 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) the same carton (c) how clear the view is
40. 40.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed

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