Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 526 · 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 forward? (a) water a swimmer pushes (b) air from the balloon (c) gas from the rocket (d) the balloon
2. 2.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) yeast (d) a sheet of white paper
4. 4.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
5. 5.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) turmeric powder (c) vinegar (d) a drinking straw
6. 6.🚁 Which of these falls slowly through the air? (a) a stone (b) a crumpled paper ball (c) a steel spoon (d) a paper helicopter
7. 7.🔍 Which is the odd one out? (a) very salty water (b) honey (c) a glass marble (d) an ice cube
8. 8.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to ice (c) some water evaporates (d) it turns to salt
9. 9.True or false: cold water is not needed for the dissolving test. (a) True (b) False
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) True (b) False
12. 12.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) cling film (c) sunlight (d) turmeric powder
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the paper clip (b) the length of the blades (c) time to reach the floor
15. 15.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
16. 16.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they turn to honey (c) they separate again (d) they mix for ever
17. 17.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.True or false: water a swimmer pushes goes backward. (a) False (b) True
19. 19.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) air pressure (d) friction
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a mirror (d) a sink or a bucket
21. 21.⚖️ 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 amount of sugar (c) the water temperature (d) the kind of sugar
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.True or false: chalk powder does not dissolve in water. (a) False (b) True
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 order of pouring”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) a small cup (c) sunlight (d) a big bowl
26. 26.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) a magnet (d) a battery cell
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the amount of water (c) the same glass (d) the same window
29. 29.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to win a prize (d) to hide the corks
30. 30.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a fridge magnet
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a ruler (c) a mirror (d) a strip of paper
32. 32.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it goes backward first (d) it speeds up
33. 33.⚖️ 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 “how much of each liquid”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🚁 Which of these falls slowly through the air? (a) a feather (b) a crumpled paper ball (c) a stone (d) a glass marble
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a pebble (d) a dry leaf
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) distance it travels (c) how big we blow it
38. 38.🌈 In VIBGYOR, what number colour is violet?
39. 39.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
40. 40.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly

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