Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 299 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) yeast (d) a ruler
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
4. 4.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a magnet (c) two small mirrors (d) a ruler
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
7. 7.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
8. 8.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
9. 9.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
10. 10.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) flipped left to right (d) much bigger
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a pencil (d) a balloon
13. 13.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) still clear water (d) a mirror
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
15. 15.⚖️ 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
16. 16.🔭 What does a periscope let you do? (a) see over a wall (b) hear far sounds (c) see in the dark (d) see germs
17. 17.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) vinegar (d) two small mirrors
18. 18.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) a balloon (d) a ruler
19. 19.True or false: vinegar is needed for the periscope. (a) False (b) True
20. 20.⚖️ 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 same mirrors
21. 21.True or false: yeast is needed for the periscope. (a) False (b) True
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.⚖️ 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
24. 24.⚖️ 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) True (b) False
25. 25.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) a dull brick (d) still clear water
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? Which of these is what we measure? (a) the same light (b) the angle of the mirrors (c) the same mirrors (d) how clear the view is
28. 28.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a wall (d) a tree
29. 29.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) plastic safety mirrors (d) big wall mirrors
30. 30.🔮 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
31. 31.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) aluminium foil (d) black cloth
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
35. 35.True or false: a magnet is not needed for the periscope. (a) True (b) False
36. 36.True or false: a mirror reflects light poorly. (a) True (b) False
37. 37.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a mirror (d) a rough wooden board
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a battery cell (d) a magnet
39. 39.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a shiny steel plate
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) how clear the view is (d) the angle of the mirrors

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