Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 83 · 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.True or false: glucose powder does not dissolve in water. (a) True (b) False
2. 2.🚁 Which of these falls fast through the air? (a) a toy parachute (b) a stone (c) an open sheet of paper (d) a feather
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is kept the same. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a pebble (d) a cork
8. 8.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) a big bowl (c) sunlight (d) water
9. 9.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a plastic ruler
10. 10.🧺 Which of these is needed for the density tower? (a) a mirror (b) water with food colour (c) yeast (d) turmeric powder
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the time of day (b) the amount of water (c) brightness of rainbow
12. 12.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
14. 14.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
15. 15.True or false: a ruler is needed for the paper helicopter. (a) True (b) False
16. 16.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the kind of sugar (b) the water temperature (c) time to dissolve
19. 19.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
21. 21.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) the spoon (c) coloured water (d) cooking oil
22. 22.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
23. 23.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
24. 24.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the room it stands in (b) the kind of flower (c) time for colour to show (d) the amount of colour
26. 26.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
27. 27.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a balloon (c) a magnet (d) a mirror
28. 28.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a towel for spills (d) a results table
31. 31.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass sweats (c) the glass leaks (d) vapour in air cools
32. 32.True or false: a balloon is needed for the dissolving test. (a) False (b) True
33. 33.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
34. 34.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
35. 35.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) less friction (d) no change at all
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🔍 Which is the odd one out? (a) an ice-cream stick (b) a cork (c) a coin (d) a piece of thermocol
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is the one thing we change. (a) True (b) False
39. 39.True or false: a spoon is needed for the density tower. (a) True (b) False
40. 40.⚖️ 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) the time we wait (b) the size of the bowl (c) sun or shade (d) the amount of water

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