Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 768 · 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.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a tub of water (c) small test objects (d) a towel for spills
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a paper clip (c) a mirror (d) safety scissors
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the cling film cover (c) how many drops form
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a magnet (d) a sunny window
5. 5.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) small pebbles (d) sugar
6. 6.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
7. 7.🔍 Which is the odd one out? (a) cooking oil (b) a ping-pong ball (c) an ice cube (d) a pebble
8. 8.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
9. 9.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) a mirror (c) two clear glasses (d) a clock or timer
10. 10.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) water warmed by the Sun (c) the bowl itself (d) the air outside
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
14. 14.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
15. 15.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
16. 16.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
17. 17.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) False (b) True
20. 20.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is less dense (d) ice is magnetic
21. 21.True or false: small pebbles does not dissolve in water. (a) False (b) True
22. 22.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) turmeric powder (c) water (d) a big bowl
23. 23.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
24. 24.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
25. 25.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
26. 26.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
27. 27.True or false: a mirror is needed for the paper helicopter. (a) False (b) True
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
30. 30.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) neither of them (c) both the same (d) the sugar cube
31. 31.🛟 Does a feather float or sink in water? (a) sinks (b) floats
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) turmeric powder (d) a clear glass of water
33. 33.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: water is not needed for the water cycle bowl. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a rubber eraser (d) a paper towel
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
37. 37.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) it goes faster (d) more friction, less far
39. 39.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
40. 40.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the glass breaks (d) the card stays on

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