Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 359 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the paper clip (c) time to reach the floor (d) the length of the blades
3. 3.True or false: a steel spoon falls slowly through the air. (a) False (b) True
4. 4.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) evaporation (d) refraction
5. 5.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
6. 6.🔮 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
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Which of these is needed for the density tower? (a) a mirror (b) turmeric powder (c) a tall clear glass (d) a magnet
9. 9.True or false: a compass needle works by magnetism. (a) True (b) False
10. 10.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) magnetism (c) gravity (d) the wind
11. 11.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
12. 12.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) faster (c) slower (d) they turn to ice
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) a teaspoon (c) a comb (d) cold water
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) turmeric powder (c) a balloon (d) yeast
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the room it stands in (c) the length of the stem
20. 20.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a piece of chalk (d) a piece of foil
21. 21.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) leave them wet (c) slide on them (d) pour more water
23. 23.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
24. 24.True or false: baking soda does not dissolve in water. (a) False (b) True
25. 25.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
26. 26.True or false: a medicine dropper works by magnetism. (a) True (b) False
27. 27.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the honey layer (c) in the water layer (d) on top of the oil
28. 28.💧 Which of these is condensation? (a) ice becoming water (b) wet hair drying (c) drops under a pot lid (d) making ice lollies
29. 29.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it turns white (d) it sinks
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) whether the card stays (c) the same glass (d) the same card
31. 31.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny bits of dust (d) tiny drops of water
32. 32.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) cooking oil (b) air (c) honey (d) a cork
34. 34.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) turmeric powder (d) small test objects
35. 35.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a clear glass of water (d) a sheet of white paper
37. 37.🛟 Which of these floats on water? (a) a glass marble (b) an ice cube (c) a ball of clay (d) a steel spoon
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) two chairs (c) a drinking straw (d) a balloon

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