Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 85 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s science idea. 3. For a fair test: one thing changed, the rest kept the same, one thing measured. 4. For safety: an adult helps, nothing goes in the mouth, no heat, sharp tools or plug points for children.

1. 1.True or false: a magnet is not needed for the shadow clock. (a) False (b) True
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
4. 4.True or false: two chairs is needed for the balloon rocket. (a) False (b) True
5. 5.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a magnet (c) a ruler (d) a strip of paper
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) time to reach the floor (c) the kind of paper
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
8. 8.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
10. 10.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a battery cell (d) a heavy nut or washer
11. 11.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: a plastic ruler is pulled by a magnet. (a) True (b) False
13. 13.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) a comb (d) a balloon
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
17. 17.🫧 Which of these is a base? (a) curd (b) sugar water (c) plain water (d) detergent water
18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) the order of the layers (c) the order of pouring (d) the same three liquids
19. 19.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
20. 20.🪴 Which part of a plant does this job: make seeds? (a) leaves (b) flower (c) roots (d) stem
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
22. 22.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) a round pencil (c) coins of one kind (d) yeast
23. 23.🧺 Which of these is needed for the static comb? (a) a mirror (b) turmeric powder (c) a balloon (d) a battery cell
24. 24.True or false: a metal key floats on water. (a) True (b) False
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a shiny steel plate (d) a rough wooden board
27. 27.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a magnet (d) a mirror
29. 29.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a mirror (c) a potted plant (d) a rubber band
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
32. 32.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a pencil (c) a mirror (d) a battery cell
34. 34.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: which side goes down is what we measure. (a) True (b) False
35. 35.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) it shrinks to nothing (c) the balloon is smaller (d) the balloon is bigger
36. 36.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a sunny open place (b) a mirror (c) a straight stick (d) chalk to mark shadows
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) cotton or cloth (d) a mirror
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) sand and pebbles (d) muddy water
40. 40.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) dry yeast (c) turmeric powder (d) warm water

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