Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 306 · 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.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
2. 2.🧺 Which of these is not needed for the periscope? (a) a pencil (b) sticky tape (c) two small mirrors (d) yeast
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) two small mirrors (d) a pencil
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
5. 5.🔭 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
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
7. 7.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
8. 8.⚖️ 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
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
11. 11.🔭 How many mirrors does a simple periscope use?
12. 12.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a rough wooden board (d) still clear water
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) yeast (d) a pencil
14. 14.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) black cloth (d) aluminium foil
15. 15.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) turmeric powder (d) sticky tape
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.True or false: a rough wooden board reflects light well. (a) True (b) False
19. 19.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
20. 20.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) still clear water (d) black cloth
21. 21.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 10 degrees (c) 45 degrees (d) 90 degrees
22. 22.True or false: a battery cell is needed for the periscope. (a) False (b) True
23. 23.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) upside down only (d) flipped left to right
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
26. 26.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
27. 27.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) to make it heavy (c) so it can float (d) so it looks shiny
29. 29.True or false: two small mirrors is needed for the periscope. (a) True (b) False
30. 30.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) dark soil
31. 31.🛟 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
32. 32.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) reflection (d) magnetism
33. 33.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
34. 34.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) two small mirrors (c) an empty juice carton (d) sticky tape
35. 35.⚖️ 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
36. 36.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a mirror (d) a rough wooden board
37. 37.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) aluminium foil
38. 38.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) a rough wooden board
39. 39.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
40. 40.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed

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