Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 693 · 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.⚖️ 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 keep it the same (c) we change it
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is what we measure. (a) False (b) True
3. 3.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.⚖️ 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 kind of clay (b) whether it floats (c) the tub of water (d) the shape of the clay
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a white flower
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
8. 8.True or false: warm water is needed for the dissolving test. (a) False (b) True
9. 9.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) water warmed by the Sun (c) the bowl itself (d) the cling film
10. 10.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) both of them (d) the big log
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) yeast
12. 12.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the rowing boat (d) water a swimmer pushes
13. 13.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
14. 14.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
18. 18.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a mirror (d) a pencil
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) yeast (d) a towel
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) time to dissolve (c) the kind of sugar (d) the amount of water
26. 26.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) water is sticky (d) ice is very cold
27. 27.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a strip of paper (c) a pencil (d) a paper clip
28. 28.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a glass marble (b) a toy parachute (c) a coin (d) a crumpled paper ball
30. 30.True or false: a spoon is needed for the density tower. (a) False (b) True
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a magnetic chess set (d) a drinking straw
33. 33.True or false: a magnet is needed for the dissolving test. (a) False (b) True
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a towel for spills (d) a magnet
35. 35.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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 amount of water (b) the same glass (c) brightness of rainbow (d) the same white paper
37. 37.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
38. 38.True or false: a magnet is not needed for the density tower. (a) False (b) True
39. 39.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) water (c) a mirror (d) a big bowl
40. 40.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) gardening shears (c) safety scissors (d) a paper cutter

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