Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 251 · 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.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
3. 3.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
4. 4.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
5. 5.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a farmer (c) a baker (d) a pilot in a plane
6. 6.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.True or false: a shiny steel plate reflects light well. (a) False (b) True
9. 9.⚖️ 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) False (b) True
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
11. 11.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the angle of the mirrors (c) the same carton (d) the same mirrors
13. 13.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a battery cell (d) a pencil
14. 14.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) aluminium foil (d) black cloth
15. 15.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) a rough wooden board (d) a dull brick
17. 17.True or false: black cloth reflects light poorly. (a) False (b) True
18. 18.True or false: a pencil is not needed for the periscope. (a) False (b) True
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.True or false: a battery cell is needed for the periscope. (a) False (b) True
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) a balloon
22. 22.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
23. 23.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
24. 24.⚖️ 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
25. 25.True or false: a ruler is not needed for the periscope. (a) False (b) True
26. 26.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) dark soil (d) a dull brick
27. 27.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
28. 28.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) a mirror
29. 29.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🧺 Which of these is needed for the periscope? (a) vinegar (b) a battery cell (c) an empty juice carton (d) a balloon
31. 31.True or false: a balloon is not needed for the periscope. (a) False (b) True
32. 32.True or false: a balloon is needed for the periscope. (a) False (b) True
33. 33.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) reflection (d) magnetism
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) two small mirrors (d) an empty juice carton
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) turmeric powder (d) a pencil
36. 36.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a pencil (c) sticky tape (d) a ruler
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a pencil (c) two small mirrors (d) sticky tape
39. 39.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) an empty juice carton (d) vinegar
40. 40.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) dark soil (d) still clear water

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