Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 457 · 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 battery cell is needed for the paper helicopter. (a) True (b) False
2. 2.🛟 Which of these floats on water? (a) a steel spoon (b) a feather (c) a ball of clay (d) a coin
3. 3.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic pin holder (d) a suction hook
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
5. 5.📘 What does “dense” mean? (a) very colourful (b) very hot (c) heavy for its size (d) very thin
6. 6.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
8. 8.True or false: a balloon is not needed for the density tower. (a) True (b) False
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: a big sugar cube dissolves slower. (a) False (b) True
11. 11.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
13. 13.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
14. 14.True or false: a drinking straw works by magnetism. (a) True (b) False
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
16. 16.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
18. 18.True or false: a bicycle pump works by magnetism. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) cooking oil (b) a pebble (c) a ping-pong ball (d) a cork
20. 20.🧺 Which of these is needed for the density tower? (a) water with food colour (b) a mirror (c) a balloon (d) a battery cell
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) a magnet (d) a balloon
22. 22.⚖️ 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) False (b) True
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
24. 24.True or false: a piece of foil lets water climb up it. (a) True (b) False
25. 25.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
26. 26.True or false: sugar dissolves in water. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) very salty water (b) a ping-pong ball (c) honey (d) a glass marble
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
29. 29.True or false: a drinking straw works by air pressure. (a) False (b) True
30. 30.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) do not lick the spoon (d) throw the glass
31. 31.True or false: a feather falls slowly through the air. (a) True (b) False
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
35. 35.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) sugar in warm water (d) sugar in icy water
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a magnet
37. 37.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a mirror (d) a towel for spills
40. 40.⚖️ 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 tub of water (c) the shape of the clay (d) the kind of clay

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