Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 8 · 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.🛟 What is a safe way to use a ruler as a lever? (a) bend it till it snaps (b) press it gently (c) stand on the ruler (d) flick coins at faces
2. 2.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) carbon dioxide gas (d) steam
4. 4.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it
5. 5.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) a magnet (d) sunlight
7. 7.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
8. 8.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 10 degrees (d) 180 degrees
9. 9.True or false: wet seeds by a window sprouts in a few days. (a) False (b) True
10. 10.True or false: a mirror is needed for the density tower. (a) False (b) True
11. 11.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) a pencil (d) sticky tape
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) True (b) False
14. 14.True or false: a well pulley is a lever. (a) True (b) False
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.True or false: north near north pull together. (a) True (b) False
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) sun or shade (b) the kind of plant (c) the size of the plant (d) amount of water drops
18. 18.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) yeast (c) a cotton bud (d) a balloon
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) True (b) False
20. 20.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
21. 21.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) faster (b) not at all (c) the same (d) slower
22. 22.⚖️ Fair test — which kind of ball bounces highest? Which of these is the one thing we change? (a) the person dropping (b) the kind of ball (c) bounce height (d) the drop height
23. 23.True or false: a pebble is less dense than water. (a) False (b) True
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) water (c) a few days (d) yeast
25. 25.📘 What pulls the paper helicopter down to the floor? (a) the wind (b) gravity (c) magnetism (d) air pressure
26. 26.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) turmeric powder (c) a potted plant (d) a rubber band
27. 27.🧲 Which of these pull together? (a) south near north (b) north near north (c) south near south
28. 28.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) taller walls (c) nothing at all (d) only short walls
29. 29.🧺 Which of these is needed for the magnet test? (a) test objects (b) a mirror (c) vinegar (d) a battery cell
30. 30.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
31. 31.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a battery cell (b) a 30 cm ruler (c) a round pencil (d) coins of one kind
32. 32.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
34. 34.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) a comb (d) a clock or timer
36. 36.🛟 There is lightning outside. Where is it safest to be? (a) in an open field (b) under a tall tree (c) on a rooftop (d) indoors
37. 37.🥄 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) sugar (d) baking soda
38. 38.True or false: your hand is opaque. (a) False (b) True
39. 39.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) harder (d) the same
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed

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