Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 346 · 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 is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
2. 2.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) dark soil
3. 3.⚖️ 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
4. 4.🔭 How many times does light bounce off a mirror in a simple periscope?
5. 5.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) a rough wooden board (d) still clear water
6. 6.True or false: aluminium foil reflects light well. (a) False (b) True
7. 7.🛟 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
8. 8.⚖️ 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
9. 9.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
10. 10.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) yeast (d) a ruler
12. 12.🔍 Which is the odd one out? (a) black cloth (b) still clear water (c) a dull brick (d) a rough wooden board
13. 13.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
14. 14.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 90 degrees (d) 45 degrees
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
17. 17.🧺 Which of these is not needed for the periscope? (a) a pencil (b) vinegar (c) an empty juice carton (d) two small mirrors
18. 18.🔭 Who uses a periscope to look above the water? (a) a baker (b) a submarine crew (c) a farmer (d) a pilot in a plane
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
20. 20.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a pencil (c) a magnet (d) turmeric powder
21. 21.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
22. 22.True or false: a battery cell is needed for the periscope. (a) True (b) False
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) two small mirrors (d) an empty juice carton
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) two small mirrors (d) a battery cell
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
26. 26.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) dark soil (d) a dull brick
27. 27.True or false: a balloon is not needed for the periscope. (a) False (b) True
28. 28.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
29. 29.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a mirror (d) aluminium foil
30. 30.🔭 Which of these reflects light well? (a) dark soil (b) aluminium foil (c) a rough wooden board (d) black cloth
31. 31.⚖️ 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 mirrors (b) the object we look at (c) the same carton (d) the angle of the mirrors
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a magnet (d) two small mirrors
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a dull brick (d) a rough wooden board
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.True or false: a mirror reflects light well. (a) False (b) True
38. 38.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
39. 39.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
40. 40.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed

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