Science Experiments Final Test Worksheet

Science experiments lesson 30: Final test: science experiments and STEM · Set 41 · 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.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls fast (b) falls slowly
2. 2.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic pin holder
3. 3.True or false: freezing water is a change that can be undone. (a) False (b) True
4. 4.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is the one thing we change. (a) True (b) False
5. 5.🧺 Do we need a tray for the magnet test? (a) not needed (b) needed
6. 6.🛟 Is this a safe or an unsafe habit in an experiment: wiping up spills at once? (a) unsafe (b) safe
7. 7.🕰️ What is a sundial used for? (a) measuring rain (b) making rainbows (c) weighing things (d) telling the time
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) yeast (c) sticky tape (d) a balloon
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: “I predict warm water works faster.” is the hypothesis step. (a) False (b) True
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
12. 12.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🧺 Do we need tiny paper bits for the static comb? (a) not needed (b) needed
14. 14.True or false: a wooden board is opaque. (a) False (b) True
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
16. 16.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) the kind of seeds (c) wet or dry cotton
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a piece of string (d) yeast
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a battery cell (c) two small mirrors (d) an empty juice carton
19. 19.🧺 Do we need a magnet for the paper bridge? (a) not needed (b) needed
20. 20.True or false: hold up the leaves is a job of the leaves. (a) False (b) True
21. 21.True or false: a balloon is needed for the ruler lever. (a) True (b) False
22. 22.🧲 Where is a bar magnet’s pull strongest? (a) in the middle (b) everywhere the same (c) nowhere (d) at its two poles
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the filter material (c) how clear the water is (d) the amount poured
24. 24.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
25. 25.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “shadow length”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
27. 27.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
29. 29.🧺 Which of these is not needed for the shadow clock? (a) a straight stick (b) a sunny open place (c) a magnet (d) chalk to mark shadows
30. 30.True or false: a string is needed for the pendulum. (a) True (b) False
31. 31.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
32. 32.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) lemon juice (c) a battery cell (d) white paper
33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
34. 34.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) browning lemon ink (c) rusting iron (d) cooking an egg
35. 35.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a mirror (d) a shiny steel plate
36. 36.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water can scald (d) hot water is heavy
37. 37.🌉 Does a U-shaped channel make a strong or a weak bridge? (a) weak bridge (b) strong bridge
38. 38.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
39. 39.True or false: a mirror is not needed for the pendulum. (a) True (b) False
40. 40.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) a wobbly chair (c) a high window ledge (d) from your raised hand

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