Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 39 · 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 paper helicopter. Which one is NOT needed? (a) safety scissors (b) a pencil (c) yeast (d) a ruler
2. 2.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) a big sugar cube (c) sugar stirred well (d) sugar in icy water
3. 3.True or false: a battery cell is not needed for the density tower. (a) False (b) True
4. 4.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ 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
7. 7.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) give them to a baby (d) keep them in your mouth
8. 8.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it floats up (c) faster (d) it stops in the air
9. 9.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
10. 10.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a toy parachute (c) a coin (d) a feather
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a mirror
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🔍 Which is the odd one out? (a) very salty water (b) a cork (c) a glass marble (d) a coin
14. 14.True or false: a strip of cloth lets water climb up it. (a) True (b) False
15. 15.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it goes much farther (d) it turns into a kite
16. 16.True or false: sugar does not dissolve in water. (a) True (b) False
17. 17.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
18. 18.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
19. 19.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) baking soda
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) False (b) True
22. 22.True or false: a spoon is not needed for the density tower. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a cork (d) a coin
24. 24.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a mirror (c) a pencil (d) a magnet
25. 25.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
26. 26.🧺 Which of these is needed for the dissolving test? (a) a clock or timer (b) a balloon (c) honey (d) a comb
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) a magnet (d) a battery cell
28. 28.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a magnet (b) water (c) a big bowl (d) cling film
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
33. 33.True or false: sweat drying on skin is condensation. (a) True (b) False
34. 34.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar in icy water
35. 35.True or false: a mirror is needed for the density tower. (a) True (b) False
36. 36.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
37. 37.⚖️ 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 window
38. 38.🍯 Which of these is denser than water? (a) air (b) very salty water (c) cooking oil (d) an ice cube
39. 39.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a sundial (c) a mirror (d) a fridge magnet
40. 40.💧 Which of these is melting? (a) a pond icing over (b) making ice lollies (c) drops under a pot lid (d) snow turning to water

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