Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 447 · 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.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at (d) the same mirrors
2. 2.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
3. 3.True or false: vinegar is not needed for the periscope. (a) False (b) True
4. 4.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
5. 5.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
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) how clear the view is (c) the same light (d) the same mirrors
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) sticky tape (d) a magnet
8. 8.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
10. 10.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
11. 11.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) dark soil (d) a mirror
12. 12.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) black cloth (d) a shiny steel plate
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) a ruler (d) sticky tape
16. 16.🔭 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
17. 17.True or false: a magnet is not needed for the periscope. (a) True (b) False
18. 18.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) still clear water (c) dark soil (d) a mirror
19. 19.⚖️ 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
20. 20.True or false: a mirror reflects light poorly. (a) True (b) False
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
22. 22.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a battery cell
24. 24.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a pencil (c) sticky tape (d) two small mirrors
27. 27.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
28. 28.True or false: yeast is not needed for the periscope. (a) False (b) True
29. 29.⚖️ 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 same light (c) the angle of the mirrors
30. 30.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) aluminium foil (d) black cloth
31. 31.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
32. 32.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) still clear water
35. 35.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) vinegar (c) a magnet (d) yeast
37. 37.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) dark soil (d) a rough wooden board
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.⚖️ 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
40. 40.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child

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