Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 489 · 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 is needed for the density tower? (a) a mirror (b) a balloon (c) a magnet (d) water with food colour
2. 2.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
3. 3.True or false: sugar in warm water dissolves faster. (a) True (b) False
4. 4.🚁 Which of these falls slowly through the air? (a) a paper helicopter (b) a steel spoon (c) a glass marble (d) a coin
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) yeast
6. 6.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a sink or a bucket (d) a magnet
8. 8.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) small test objects (d) a results table
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it melts (d) it floats higher
10. 10.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) time to reach the floor (b) the person dropping (c) the paper clip (d) the length of the blades
12. 12.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a feather (c) a toy parachute (d) a steel spoon
13. 13.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
16. 16.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) cooking oil (d) very salty water
18. 18.🔍 Which is the odd one out? (a) an ice cube (b) a glass marble (c) a pebble (d) very salty water
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🍯 Which of these is less dense than water? (a) very salty water (b) a glass marble (c) a coin (d) an ice cube
23. 23.⚖️ 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 shape of the clay (b) the amount of clay (c) the tub of water (d) the kind of clay
24. 24.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.⚖️ 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) sun or shade (b) how many drops form (c) the amount of water (d) the cling film cover
26. 26.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil makes it rain (d) oil attracts magnets
27. 27.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
28. 28.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) warm water (c) two clear glasses (d) a teaspoon
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) the amount of water (c) brightness of rainbow (d) the time of day
31. 31.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
32. 32.True or false: water is not needed for the water cycle bowl. (a) True (b) False
33. 33.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) turmeric powder (d) cooking oil
35. 35.📘 What pulls the paper helicopter down to the floor? (a) gravity (b) magnetism (c) air pressure (d) the wind
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of water (c) the length of the stem (d) time for colour to show
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
38. 38.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
39. 39.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) cooking oil (b) honey (c) air (d) a ping-pong ball

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