Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 593 · 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? True or false: the angle of the mirrors is kept the same. (a) True (b) False
2. 2.True or false: vinegar is needed for the periscope. (a) False (b) True
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) a balloon
4. 4.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) sticky tape (d) two small mirrors
8. 8.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
10. 10.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a dull brick (d) a shiny steel plate
11. 11.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) black cloth
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
13. 13.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a friend’s toy (d) a tree
14. 14.True or false: a battery cell is not needed for the periscope. (a) True (b) False
15. 15.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) still clear water
16. 16.True or false: a rough wooden board reflects light poorly. (a) True (b) False
17. 17.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) turmeric powder (d) two small mirrors
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) how clear the view is (d) the same carton
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
20. 20.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) turmeric powder (d) a ruler
22. 22.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
24. 24.True or false: a dull brick reflects light well. (a) False (b) True
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same carton (d) the object we look at
26. 26.⚖️ 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
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
32. 32.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) a dull brick
33. 33.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
34. 34.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
35. 35.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) nothing at all (d) the ground
36. 36.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
37. 37.⚖️ 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
38. 38.True or false: still clear water reflects light poorly. (a) False (b) True
39. 39.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
40. 40.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed

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