Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 6 · 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: a balloon is not needed for the water cycle bowl. (a) True (b) False
2. 2.True or false: yeast is needed for the water rainbow. (a) False (b) True
3. 3.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) a pencil (c) safety scissors (d) a strip of paper
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is the one thing we change. (a) True (b) False
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the shape of the clay (c) the amount of clay (d) the kind of clay
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) True (b) False
8. 8.True or false: a paper helicopter falls slowly through the air. (a) True (b) False
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
10. 10.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls fast (b) falls slowly
12. 12.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) how big we blow it (c) distance it travels (d) the same string
14. 14.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
15. 15.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) wet hair drying (b) wet clothes drying (c) sweat drying on skin (d) ice becoming water
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a towel
19. 19.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
20. 20.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
22. 22.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) the balloon (d) water from the oars
23. 23.True or false: making ice lollies is melting. (a) True (b) False
24. 24.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
25. 25.🔍 Which is the odd one out? (a) drops under a pot lid (b) wet clothes drying (c) drops on a cold glass (d) a misty bathroom mirror
26. 26.⚖️ 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 amount of water (b) the cling film cover (c) sun or shade (d) the time we wait
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
28. 28.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
29. 29.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
30. 30.🛟 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
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is very cold (d) ice is less dense
33. 33.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
34. 34.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
36. 36.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a small cup (c) a balloon (d) a big bowl
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the person dropping (c) time to reach the floor (d) the length of the blades
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
40. 40.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) throw them away safely (d) chew them

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