Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 894 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a rubber eraser
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) honey (d) a balloon
3. 3.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
5. 5.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.True or false: honey is less dense than water. (a) True (b) False
8. 8.True or false: a glass marble is less dense than water. (a) False (b) True
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a mirror (d) a white flower
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.💧 Which of these is melting? (a) wet hair drying (b) a puddle drying up (c) butter going runny (d) drops on a cold glass
12. 12.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) yeast (c) a mirror (d) a battery cell
13. 13.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
14. 14.True or false: sugar left unstirred dissolves slower. (a) True (b) False
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) put string round a neck (d) aim it at your friend
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.True or false: a crumpled paper ball falls fast through the air. (a) True (b) False
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) the shape of the clay (c) whether it floats
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the kind of clay (c) the tub of water (d) the shape of the clay
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
23. 23.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
24. 24.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
25. 25.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) it never stops (d) when it gets cold
26. 26.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
27. 27.📘 What does “dense” mean? (a) very thin (b) very hot (c) very colourful (d) heavy for its size
28. 28.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
29. 29.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) at the very bottom (c) in the water layer (d) on top of the oil
30. 30.🔍 Which is the odd one out? (a) drops under a pot lid (b) drops on a cold glass (c) a puddle drying up (d) dew on morning grass
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) small test objects (d) a towel for spills
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
34. 34.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) fewer drops form (c) more drops form (d) the water turns red
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is the one thing we change. (a) False (b) True
36. 36.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it flies upward (c) it turns into a ball (d) it stays still in air
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the amount of water (b) the time we wait (c) the size of the bowl (d) sun or shade
38. 38.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) turmeric powder (c) honey (d) water with food colour
39. 39.📘 What is water vapour? (a) water as a gas (b) salty water (c) tiny ice cubes (d) a kind of smoke
40. 40.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False

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