Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 948 · 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? What do we do with “the same mirrors”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ 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
3. 3.True or false: a ruler is needed for the periscope. (a) True (b) False
4. 4.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
5. 5.True or false: sticky tape is needed for the periscope. (a) True (b) False
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
7. 7.🔭 How many mirrors does a simple periscope use?
8. 8.🔭 Which of these reflects light poorly? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a magnet
10. 10.True or false: a rough wooden board reflects light well. (a) True (b) False
11. 11.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
12. 12.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) vinegar (d) a ruler
13. 13.True or false: two small mirrors is needed for the periscope. (a) False (b) True
14. 14.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) a shiny steel plate (d) a dull brick
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 10 degrees (d) 180 degrees
17. 17.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) still clear water
18. 18.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
19. 19.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
20. 20.True or false: a pencil is not needed for the periscope. (a) True (b) False
21. 21.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) a battery cell (d) sticky tape
24. 24.🔭 Which of these reflects light well? (a) a shiny steel plate (b) black cloth (c) a rough wooden board (d) dark soil
25. 25.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
28. 28.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
29. 29.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
30. 30.True or false: still clear water reflects light poorly. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ 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 same mirrors (c) the angle of the mirrors (d) the same light
35. 35.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) two pictures (c) a rainbow (d) a brighter view
36. 36.True or false: vinegar is needed for the periscope. (a) True (b) False
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
38. 38.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) two small mirrors (d) a pencil
39. 39.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) dark soil
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) vinegar (b) an empty juice carton (c) two small mirrors (d) a ruler

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