Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 426 · 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 goes backward? (a) gas from the rocket (b) the rocket (c) the swimmer (d) the rowing boat
2. 2.🔍 Which is the odd one out? (a) dew on morning grass (b) drops on a cold glass (c) wet clothes drying (d) a misty bathroom mirror
3. 3.🍯 Which of these is less dense than water? (a) honey (b) an ice cube (c) a coin (d) very salty water
4. 4.True or false: a mirror is needed for the water cycle bowl. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) an ice-cream stick (c) a pebble (d) a coin
6. 6.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a tub of water (c) small test objects (d) a results table
8. 8.🚁 Which of these falls fast through the air? (a) a glass marble (b) a fluff of cotton (c) a feather (d) an open sheet of paper
9. 9.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
10. 10.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
11. 11.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🔍 Which is the odd one out? (a) a coin (b) cooking oil (c) honey (d) very salty water
13. 13.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
14. 14.🧺 Do we need a balloon for the water cycle bowl? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) glucose powder (d) small pebbles
16. 16.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a big bowl (c) ice cubes (d) a balloon
17. 17.True or false: a spoon is needed for the density tower. (a) True (b) False
18. 18.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
20. 20.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.True or false: sugar in warm water dissolves slower. (a) True (b) False
23. 23.True or false: a ball of clay floats on water. (a) True (b) False
24. 24.True or false: dew on morning grass is freezing. (a) True (b) False
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a stiff postcard
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
28. 28.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a flower stem (d) a plastic ruler
29. 29.⚖️ 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 room it stands in (b) the amount of water (c) time for colour to show (d) the length of the stem
30. 30.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
31. 31.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) aim it at your friend (d) put string round a neck
32. 32.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
33. 33.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a magnet (d) a clock or timer
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
37. 37.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a magnet
39. 39.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we keep it the same (c) we measure it

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