Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 58 · 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 is the odd one out? (a) sugar (b) sand (c) cooking oil (d) chalk powder
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a magnet (c) a paper clip (d) a pencil
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
4. 4.True or false: cold water is not needed for the dissolving test. (a) True (b) False
5. 5.True or false: a piece of foil lets water climb up it. (a) False (b) True
6. 6.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🥄 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sand (d) table salt
8. 8.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) faster (b) they turn to ice (c) they never dry (d) slower
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
11. 11.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
12. 12.True or false: a medicine dropper works by air pressure. (a) False (b) True
13. 13.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
14. 14.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
17. 17.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls slowly (b) falls fast
18. 18.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
19. 19.True or false: butter going runny is melting. (a) False (b) True
20. 20.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) True (b) False
22. 22.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) throw them away safely (c) keep them in your mouth (d) chew them
23. 23.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
24. 24.True or false: a paper towel lets water climb up it. (a) True (b) False
25. 25.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
26. 26.True or false: a ping-pong ball is denser than water. (a) True (b) False
27. 27.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) warm water is thicker (c) cold water is wet (d) particles move faster
28. 28.🚀 Which of these goes backward? (a) gas from the rocket (b) the balloon (c) the swimmer (d) the rocket
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a towel for spills
31. 31.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it floats up (d) it settles at the bottom
32. 32.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) gravity (c) air pressure (d) the wind
33. 33.🚁 Which of these falls slowly through the air? (a) a coin (b) a steel spoon (c) a glass marble (d) a feather
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a paper helicopter (c) a crumpled paper ball (d) a glass marble
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) sawdust (d) sand
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🥄 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) food colour (d) sawdust
39. 39.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
40. 40.True or false: honey is needed for the density tower. (a) True (b) False

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