Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 643 · 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 dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) a balloon (d) sugar
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
3. 3.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a comb (c) cotton wool (d) warm water
4. 4.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) they turn to ice (c) slower (d) faster
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
6. 6.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same white paper
8. 8.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
11. 11.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
13. 13.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) water is sticky (d) ice is less dense
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🥄 Does powdered sugar dissolve faster or slower? (a) slower (b) faster
17. 17.🔍 Which is the odd one out? (a) a paper helicopter (b) a toy parachute (c) a stone (d) an open sheet of paper
18. 18.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
19. 19.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the stickiest (c) it is yellow (d) it is the coldest
20. 20.🔍 Which is the odd one out? (a) a coin (b) very salty water (c) a pebble (d) cooking oil
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.True or false: cold water is not needed for the dissolving test. (a) False (b) True
25. 25.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it flies off the string (d) it goes much farther
26. 26.True or false: a small cup is not needed for the water cycle bowl. (a) True (b) False
27. 27.🍯 Which of these is less dense than water? (a) a glass marble (b) very salty water (c) a cork (d) honey
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
29. 29.True or false: cooking oil does not dissolve in water. (a) False (b) True
30. 30.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
31. 31.True or false: a teaspoon is not needed for the dissolving test. (a) False (b) True
32. 32.🧺 Which of these is needed for the density tower? (a) a balloon (b) a tall clear glass (c) yeast (d) a magnet
33. 33.⚖️ 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) the size of the bowl (b) sun or shade (c) how many drops form
34. 34.🧺 Which of these is needed for the dissolving test? (a) a teaspoon (b) honey (c) a balloon (d) a mirror
35. 35.🚁 Dropped from a raised hand, does a glass marble fall slowly or fast? (a) falls fast (b) falls slowly
36. 36.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it still floats (d) it sinks
37. 37.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sunny window
38. 38.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a magnet (c) a battery cell (d) a long string
39. 39.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve

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