Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 878 · 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 is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) an empty juice carton (d) yeast
2. 2.🔭 How many times does light bounce off a mirror in a simple periscope?
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) sticky tape (c) two small mirrors (d) a pencil
4. 4.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) turmeric powder (d) a balloon
5. 5.🔮 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
6. 6.True or false: a shiny steel plate reflects light well. (a) False (b) True
7. 7.True or false: a pencil is needed for the periscope. (a) True (b) False
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) the ground (d) taller walls
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) an empty juice carton (d) a pencil
10. 10.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
11. 11.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
12. 12.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
13. 13.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) aluminium foil
14. 14.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
15. 15.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a mirror
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) black cloth
19. 19.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) so it can float (d) to make it heavy
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
22. 22.True or false: black cloth reflects light poorly. (a) False (b) True
23. 23.True or false: a balloon is needed for the periscope. (a) True (b) False
24. 24.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a shiny steel plate
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the object we look at (c) the same mirrors (d) the angle of the mirrors
26. 26.True or false: still clear water reflects light well. (a) False (b) True
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) plastic safety mirrors (d) big wall mirrors
28. 28.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a magnet (d) a pencil
30. 30.⚖️ 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
31. 31.True or false: turmeric powder is needed for the periscope. (a) False (b) True
32. 32.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
33. 33.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the same carton (c) the object we look at (d) how clear the view is
36. 36.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) sticky tape (d) a magnet
37. 37.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a balloon (d) a ruler
39. 39.⚖️ 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 measure it (c) we change it
40. 40.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to

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