Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 2 · 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 ruler for the periscope? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) sticky tape (c) turmeric powder (d) a pencil
3. 3.True or false: a pencil is needed for the periscope. (a) False (b) True
4. 4.🔭 Which of these reflects light poorly? (a) dark soil (b) a mirror (c) aluminium foil (d) a shiny steel plate
5. 5.⚖️ 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
6. 6.⚖️ 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) the angle of the mirrors (d) how clear the view is
7. 7.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.True or false: a pencil is not needed for the periscope. (a) False (b) True
9. 9.True or false: a battery cell is needed for the periscope. (a) True (b) False
10. 10.True or false: a shiny steel plate reflects light well. (a) False (b) True
11. 11.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
12. 12.True or false: yeast is not needed for the periscope. (a) True (b) False
13. 13.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) turmeric powder (d) an empty juice carton
14. 14.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
15. 15.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
17. 17.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
18. 18.🔭 How many times does light bounce off a mirror in a simple periscope?
19. 19.⚖️ 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
20. 20.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it can float (c) so it looks shiny (d) to make it heavy
21. 21.⚖️ 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 object we look at (c) the same mirrors (d) the angle of the mirrors
22. 22.True or false: a rough wooden board reflects light well. (a) True (b) False
23. 23.🧺 Which of these is not needed for the periscope? (a) yeast (b) an empty juice carton (c) a ruler (d) a pencil
24. 24.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) dark soil (d) aluminium foil
25. 25.🔭 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
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
27. 27.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) dark soil (d) a dull brick
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
29. 29.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
30. 30.True or false: a magnet is needed for the periscope. (a) True (b) False
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) broken glass bits (d) big wall mirrors
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) dark soil (d) a shiny steel plate
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a ruler (d) a magnet
35. 35.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 90 degrees (d) 10 degrees
36. 36.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a mirror
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) True (b) False
38. 38.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
39. 39.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) vinegar (c) sticky tape (d) a ruler

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