Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 385 · 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.True or false: a magnet is needed for the balloon rocket. (a) False (b) True
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) whether it floats (c) the kind of clay (d) the shape of the clay
4. 4.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a plastic ruler
5. 5.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) more friction, less far (d) it goes faster
6. 6.True or false: a crumpled paper ball falls fast through the air. (a) False (b) True
7. 7.True or false: a battery cell is not needed for the water cycle bowl. (a) True (b) False
8. 8.True or false: sugar in warm water dissolves slower. (a) True (b) False
9. 9.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it travels farther (d) it goes backward first
10. 10.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
11. 11.🛟 Where is a safe place to drop the helicopter from? (a) from your raised hand (b) a wobbly chair (c) a roof edge (d) a high window ledge
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a balloon (d) a tub of water
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
14. 14.🍯 Which of these is denser than water? (a) a cork (b) a glass marble (c) an ice cube (d) air
15. 15.True or false: a drinking straw works by air pressure. (a) False (b) True
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they turn to ice (c) they never dry (d) faster
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a battery cell (c) a mirror (d) a magnet
19. 19.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic chess set (d) a suction hook
20. 20.📘 What is water vapour? (a) tiny ice cubes (b) water as a gas (c) a kind of smoke (d) salty water
21. 21.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
22. 22.🌈 In VIBGYOR, what number colour is yellow?
23. 23.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) pour more water (c) slide on them (d) leave them wet
24. 24.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the stirring (b) the water temperature (c) the amount of water (d) the amount of sugar
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
29. 29.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.⚖️ 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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is heavier (c) oil is less dense (d) oil is sticky
32. 32.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) honey (c) a spoon (d) a magnet
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) honey (c) cooking oil (d) a tall clear glass
34. 34.🧺 Do we need honey for the density tower? (a) needed (b) not needed
35. 35.🍯 Which of these is less dense than water? (a) air (b) honey (c) a coin (d) a pebble
36. 36.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the densest (d) it is the stickiest
37. 37.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
38. 38.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it melts (d) it turns blue
40. 40.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True

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