Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 659 · 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 glass marble is denser than water. (a) True (b) False
2. 2.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it goes backward first (d) it travels less far
3. 3.True or false: water with food colour is not needed for the density tower. (a) True (b) False
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a glass of water (d) turmeric powder
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) turmeric powder (d) small test objects
7. 7.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
8. 8.⚖️ 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
9. 9.🥄 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) food colour (d) sugar
10. 10.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) pour it on the floor (d) taste each layer
11. 11.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
12. 12.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) cotton wool (c) a comb (d) warm water
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) the same three liquids
16. 16.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it dissolves (d) it still floats
17. 17.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) neither of them (c) a sheet of glass (d) the crumpled ball
18. 18.📘 What does “dense” mean? (a) very thin (b) very colourful (c) heavy for its size (d) very hot
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) True (b) False
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
23. 23.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) glucose powder (d) sawdust
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🔍 Which is the odd one out? (a) an open sheet of paper (b) a toy parachute (c) a crumpled paper ball (d) a fluff of cotton
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same straw
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a balloon (d) a tub of water
28. 28.🛟 Which of these floats on water? (a) a steel spoon (b) an ice-cream stick (c) a metal key (d) a glass marble
29. 29.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
30. 30.🌈 In VIBGYOR, what number colour is violet?
31. 31.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) oil turns into honey (d) spilled oil is slippery
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a strip of paper (c) a pencil (d) a balloon
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
34. 34.💧 Which of these is melting? (a) ice becoming water (b) a misty bathroom mirror (c) sweat drying on skin (d) wet hair drying
35. 35.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it turns into a kite (d) it goes less far
36. 36.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) powdered sugar (d) the sugar cube
37. 37.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a mirror (c) a spoon (d) honey
38. 38.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the dissolving test? (a) sugar (b) a comb (c) cold water (d) two clear glasses
40. 40.🧺 Do we need a mirror for the paper helicopter? (a) not needed (b) needed

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