Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 586 · 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 is the odd one out? (a) sand (b) sugar (c) baking soda (d) table salt
2. 2.🥄 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) sugar (d) food colour
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a magnet (c) a comb (d) cold water
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) True (b) False
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🛟 Does a feather float or sink in water? (a) sinks (b) floats
8. 8.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sawdust (d) small pebbles
9. 9.🛟 Which of these floats on water? (a) a feather (b) a steel spoon (c) a ball of clay (d) an iron nail
10. 10.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
11. 11.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) safety scissors (d) sharp kitchen shears
12. 12.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) a drinking straw (d) yeast
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
15. 15.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
16. 16.📘 What is water vapour? (a) salty water (b) a kind of smoke (c) water as a gas (d) tiny ice cubes
17. 17.True or false: a battery cell is needed for the density tower. (a) False (b) True
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a balloon (d) a glass of water
19. 19.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
20. 20.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a magnet (d) sticky tape
21. 21.📘 What do we call water with sugar dissolved in it? (a) a solution (b) a rainbow (c) a magnet (d) a crystal
22. 22.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the same glass (c) how much of each liquid (d) the order of pouring
23. 23.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a spoon (c) cooking oil (d) turmeric powder
24. 24.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) a strip of paper (d) turmeric powder
25. 25.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) a piece of thermocol (d) a ball of clay
26. 26.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it turns into a kite (d) it can pop loudly
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the kind of sugar
28. 28.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) sunlight (c) a balloon (d) a big bowl
29. 29.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
30. 30.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) a sheet of white paper
32. 32.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) a balloon (d) turmeric powder
33. 33.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
34. 34.True or false: a crumpled paper ball falls slowly through the air. (a) False (b) True
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the room it stands in (c) the kind of flower (d) the amount of water
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) safety scissors (c) a strip of paper (d) a paper clip
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
38. 38.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
39. 39.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water can scald (c) hot water is magnetic (d) it changes colour
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) turmeric powder (c) a tub of water (d) a battery cell

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