Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 456 · 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 of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
2. 2.⚖️ 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 carton (c) the object we look at (d) the same mirrors
3. 3.🔭 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
4. 4.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
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 measure it (b) we change it (c) we keep it the same
6. 6.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a balloon (d) a pencil
8. 8.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) vinegar (c) two small mirrors (d) a pencil
11. 11.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
12. 12.⚖️ 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
13. 13.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
14. 14.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) aluminium foil (d) a shiny steel plate
15. 15.🔮 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
16. 16.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) vinegar (c) yeast (d) turmeric powder
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a battery cell (c) two small mirrors (d) a ruler
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
20. 20.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) yeast
21. 21.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
22. 22.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
23. 23.⚖️ 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 change it (c) we keep it the same
24. 24.🔭 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
25. 25.⚖️ 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 object we look at (c) the angle of the mirrors
26. 26.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
27. 27.⚖️ 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
28. 28.True or false: vinegar is not needed for the periscope. (a) False (b) True
29. 29.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
30. 30.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
34. 34.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) dark soil (d) aluminium foil
35. 35.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a magnet (d) a pencil
38. 38.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
39. 39.🔍 Which is the odd one out? (a) a rough wooden board (b) a mirror (c) black cloth (d) a dull brick
40. 40.True or false: a rough wooden board reflects light well. (a) False (b) True

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