Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 110 · 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.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
2. 2.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) aluminium foil (d) a dull brick
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) an empty juice carton (d) sticky tape
4. 4.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
5. 5.True or false: a battery cell is not needed for the periscope. (a) True (b) False
6. 6.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) turmeric powder
9. 9.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
10. 10.⚖️ 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) True (b) False
11. 11.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) a dull brick (d) black cloth
12. 12.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) aluminium foil
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) a dull brick (d) aluminium foil
16. 16.⚖️ 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 angle of the mirrors (d) the same carton
17. 17.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.True or false: a rough wooden board reflects light well. (a) False (b) True
20. 20.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.True or false: a dull brick reflects light poorly. (a) False (b) True
22. 22.🔭 How many mirrors does a simple periscope use?
23. 23.True or false: yeast is not needed for the periscope. (a) True (b) False
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.True or false: a balloon is needed for the periscope. (a) True (b) False
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) the same mirrors (d) how clear the view is
27. 27.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
28. 28.True or false: a rough wooden board reflects light poorly. (a) True (b) False
29. 29.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a magnet (d) an empty juice carton
30. 30.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
32. 32.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
33. 33.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
34. 34.True or false: a battery cell is needed for the periscope. (a) False (b) True
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) sticky tape (d) a balloon
36. 36.True or false: still clear water reflects light poorly. (a) True (b) False
37. 37.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
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 object we look at (c) how clear the view is
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it

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