Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 683 · 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.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
2. 2.True or false: still clear water reflects light poorly. (a) True (b) False
3. 3.🧺 Which of these is needed for the periscope? (a) a magnet (b) an empty juice carton (c) turmeric powder (d) a balloon
4. 4.🔭 How many mirrors does a simple periscope use?
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) a ruler (d) sticky tape
6. 6.⚖️ 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
7. 7.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
8. 8.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
9. 9.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
10. 10.🧺 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
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) two small mirrors
12. 12.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) aluminium foil
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.⚖️ 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 carton (b) the same mirrors (c) the angle of the mirrors (d) the same light
15. 15.🧺 Which of these is not needed for the periscope? (a) a balloon (b) a ruler (c) two small mirrors (d) a pencil
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) two small mirrors (d) turmeric powder
18. 18.True or false: turmeric powder is needed for the periscope. (a) True (b) False
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 180 degrees (d) 90 degrees
22. 22.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
23. 23.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see in the dark (d) see over a wall
24. 24.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
26. 26.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a dull brick (d) still clear water
27. 27.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) still clear water (d) a dull brick
28. 28.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
29. 29.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) a shiny steel plate
30. 30.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) yeast (d) sticky tape
31. 31.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
33. 33.True or false: a pencil is not needed for the periscope. (a) True (b) False
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same carton
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same light
37. 37.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) magnetism (d) refraction
38. 38.True or false: a mirror reflects light poorly. (a) True (b) False
39. 39.🔭 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
40. 40.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a farmer (c) a baker (d) a submarine crew

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