Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 731 · 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) still clear water (b) aluminium foil (c) a shiny steel plate (d) black cloth
2. 2.🧺 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
3. 3.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
4. 4.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float
5. 5.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a ruler (d) vinegar
6. 6.🛟 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
7. 7.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a balloon (c) a battery cell (d) sticky tape
8. 8.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at
10. 10.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
11. 11.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) a rough wooden board (d) a shiny steel plate
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) a ruler (c) sticky tape (d) two small mirrors
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 keep it the same (b) we change it (c) we measure it
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.⚖️ 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 same light (d) how clear the view is
17. 17.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 180 degrees (c) 90 degrees (d) 45 degrees
18. 18.🔭 How many mirrors does a simple periscope use?
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) True (b) False
20. 20.🧺 Which of these is not needed for the periscope? (a) yeast (b) sticky tape (c) a ruler (d) a pencil
21. 21.🔭 Which of these reflects light well? (a) aluminium foil (b) black cloth (c) dark soil (d) a rough wooden board
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.True or false: a pencil is not needed for the periscope. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) dark soil (b) still clear water (c) a shiny steel plate (d) a mirror
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
27. 27.True or false: a battery cell is not needed for the periscope. (a) False (b) True
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
29. 29.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) turmeric powder
30. 30.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
31. 31.True or false: a magnet is not needed for the periscope. (a) False (b) True
32. 32.True or false: a ruler is needed for the periscope. (a) False (b) True
33. 33.🔮 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
34. 34.True or false: a dull brick reflects light poorly. (a) False (b) True
35. 35.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
36. 36.True or false: vinegar is needed for the periscope. (a) False (b) True
37. 37.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
38. 38.True or false: a mirror reflects light well. (a) True (b) False
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
40. 40.True or false: aluminium foil reflects light well. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids