Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 776 · 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.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they separate again (c) they mix for ever (d) they turn to honey
2. 2.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
3. 3.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
4. 4.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) it stops in the air (c) it floats up (d) slower
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Which of these is not needed for the density tower? (a) a battery cell (b) cooking oil (c) water with food colour (d) honey
7. 7.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) the rocket (d) water from the oars
8. 8.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
9. 9.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need a teaspoon for the dissolving test? (a) needed (b) not needed
11. 11.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) gas from the rocket (d) water a swimmer pushes
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 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
14. 14.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a pencil (c) a paper clip (d) a balloon
15. 15.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) a teaspoon (c) cold water (d) two clear glasses
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🛟 Does a feather float or sink in water? (a) floats (b) sinks
18. 18.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
19. 19.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) two clear glasses (c) warm water (d) a mirror
20. 20.💧 Which change is this: making ice lollies? (a) melting (b) evaporation (c) freezing (d) condensation
21. 21.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
22. 22.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it disappears (c) it turns to drops (d) it turns to salt
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) how many drops form (c) the cling film cover (d) the size of the bowl
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the stirring (c) the amount of sugar (d) the amount of water
25. 25.True or false: table salt does not dissolve in water. (a) False (b) True
26. 26.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
28. 28.🛟 Where is a safe place to drop the helicopter from? (a) a roof edge (b) from your raised hand (c) a high window ledge (d) a wobbly chair
29. 29.True or false: a cotton thread does not let water climb. (a) False (b) True
30. 30.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.True or false: a battery cell is not needed for the density tower. (a) True (b) False
32. 32.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a glass of water (d) a towel
34. 34.🔍 Which is the odd one out? (a) an open sheet of paper (b) a stone (c) a paper helicopter (d) a feather
35. 35.🚀 Which of these goes backward? (a) the swimmer (b) water a swimmer pushes (c) the rowing boat (d) the balloon
36. 36.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
37. 37.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
38. 38.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a battery cell (d) a glass of water
40. 40.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) a sheet of glass (d) the crumpled ball

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