Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 980 · 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.⚖️ 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
2. 2.True or false: still clear water reflects light poorly. (a) True (b) False
3. 3.🔭 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
4. 4.True or false: a dull brick reflects light poorly. (a) True (b) False
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a shiny steel plate (d) a dull brick
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a mirror
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) vinegar (d) an empty juice carton
9. 9.🧺 Which of these is not needed for the periscope? (a) a magnet (b) an empty juice carton (c) a ruler (d) sticky tape
10. 10.True or false: a mirror reflects light poorly. (a) True (b) False
11. 11.True or false: yeast is not needed for the periscope. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
14. 14.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
16. 16.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
17. 17.True or false: a mirror reflects light well. (a) True (b) False
18. 18.True or false: a rough wooden board reflects light poorly. (a) True (b) False
19. 19.⚖️ 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 light (d) how clear the view is
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
21. 21.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a balloon (c) a magnet (d) a battery cell
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) two small mirrors (d) yeast
23. 23.True or false: yeast is needed for the periscope. (a) False (b) True
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
25. 25.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) False (b) True
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) an empty juice carton (c) yeast (d) vinegar
30. 30.True or false: aluminium foil reflects light well. (a) False (b) True
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
33. 33.⚖️ 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) True (b) False
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same light (c) the same mirrors (d) the angle of the mirrors
35. 35.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.⚖️ 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
38. 38.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
40. 40.True or false: dark soil reflects light poorly. (a) True (b) False

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