Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 501 · 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 — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the drop height (c) time to reach the floor (d) the length of the blades
4. 4.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) turmeric powder (c) a tall clear glass (d) water with food colour
5. 5.🌈 In VIBGYOR, what number colour is violet?
6. 6.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a magnet (c) a ruler (d) a pencil
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) two clear glasses (c) a teaspoon (d) a comb
9. 9.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a ruler (c) a battery cell (d) safety scissors
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🚁 Which of these falls fast through the air? (a) a steel spoon (b) a toy parachute (c) a fluff of cotton (d) an open sheet of paper
12. 12.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
13. 13.🔍 Which is the odd one out? (a) a stone (b) a coin (c) a steel spoon (d) a feather
14. 14.📘 What is the push of air on a falling thing called? (a) magnetism (b) floating (c) air resistance (d) dissolving
15. 15.⚖️ 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 length of the stem (b) the room it stands in (c) the amount of colour (d) time for colour to show
16. 16.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
18. 18.🔍 Which is the odd one out? (a) an open sheet of paper (b) a feather (c) a toy parachute (d) a stone
19. 19.⚖️ 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 same glass (b) the time of day (c) brightness of rainbow (d) the same window
20. 20.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) safety scissors (d) a paper cutter
21. 21.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it gets too heavy (d) it changes colour
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
25. 25.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
26. 26.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) True (b) False
27. 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) a balloon (d) a mirror
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a mirror (d) a results table
29. 29.True or false: a feather floats on water. (a) False (b) True
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a towel
31. 31.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) yeast (b) a big bowl (c) ice cubes (d) sunlight
32. 32.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a battery cell (d) sticky tape
33. 33.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to stop the spinning (c) to make it fall slower (d) to make it magnetic
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
36. 36.True or false: a metal key sinks in water. (a) False (b) True
37. 37.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
39. 39.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) cooking oil (d) food colour
40. 40.True or false: a vacuum cleaner works by air pressure. (a) False (b) True

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