Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 55 · 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.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) still clear water (d) black cloth
2. 2.True or false: a mirror reflects light poorly. (a) False (b) True
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
5. 5.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a farmer (d) a submarine crew
6. 6.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a dull brick (d) a mirror
7. 7.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a ruler (c) a magnet (d) an empty juice carton
8. 8.True or false: aluminium foil reflects light well. (a) True (b) False
9. 9.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
10. 10.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
11. 11.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
12. 12.True or false: sticky tape is needed for the periscope. (a) True (b) False
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
15. 15.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) dark soil (d) a dull brick
16. 16.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
19. 19.True or false: a balloon is needed for the periscope. (a) False (b) True
20. 20.True or false: yeast is not needed for the periscope. (a) False (b) True
21. 21.🛟 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
22. 22.⚖️ 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 same light (c) the object we look at (d) the angle of the mirrors
23. 23.True or false: a rough wooden board reflects light well. (a) True (b) False
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) a ruler (c) a pencil (d) two small mirrors
25. 25.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
26. 26.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
27. 27.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a battery cell (d) two small mirrors
28. 28.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same light (d) the same mirrors
30. 30.⚖️ 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 object we look at
31. 31.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) refraction (d) evaporation
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) True (b) False
34. 34.⚖️ 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 measure it (c) we change it
35. 35.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.True or false: still clear water reflects light poorly. (a) False (b) True
37. 37.True or false: two small mirrors is needed for the periscope. (a) False (b) True
38. 38.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
39. 39.True or false: a mirror reflects light well. (a) False (b) True
40. 40.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) aluminium foil

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