Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 55 · 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 balloon rocket. Which one is NOT needed? (a) a long string (b) a drinking straw (c) a balloon (d) a magnet
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is the one thing we change. (a) True (b) False
3. 3.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) very salty water (d) air
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) False (b) True
6. 6.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a magnet (c) a comb (d) a teaspoon
7. 7.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a balloon (d) a sheet of white paper
9. 9.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
10. 10.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the stickiest (c) it is the coldest (d) it is yellow
11. 11.True or false: the balloon goes backward. (a) False (b) True
12. 12.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
13. 13.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.⚖️ 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 what we measure. (a) False (b) True
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a balloon (d) a battery cell
16. 16.True or false: a toy parachute falls fast through the air. (a) False (b) True
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same white paper (b) the same glass (c) the same window (d) the amount of water
18. 18.⚖️ 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 water
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a glass marble
21. 21.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) taste each layer (d) pour it on the floor
22. 22.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) ice cubes (c) yeast (d) a battery cell
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
24. 24.💧 Which change is this: butter going runny? (a) evaporation (b) melting (c) freezing (d) condensation
25. 25.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a drinking straw
27. 27.🚁 Which of these falls slowly through the air? (a) a stone (b) a fluff of cotton (c) a steel spoon (d) a crumpled paper ball
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) turmeric powder (d) a few hours of waiting
29. 29.True or false: a feather floats on water. (a) True (b) False
30. 30.🌈 How many colours do we name in a rainbow (VIBGYOR)?
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) the slope of the string (c) how big we blow it (d) the same straw
32. 32.True or false: a compass needle works by magnetism. (a) False (b) True
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) sticky tape (d) a mirror
35. 35.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a paper helicopter (c) a coin (d) a stone
36. 36.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
37. 37.🍯 Which of these is less dense than water? (a) very salty water (b) a pebble (c) a coin (d) a ping-pong ball
38. 38.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) food colour (d) a glass of water
40. 40.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed

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