Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 651 · 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.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) in the honey layer (d) under the honey
2. 2.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the swimmer (c) air from the balloon (d) water from the oars
3. 3.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the time we wait (b) how many drops form (c) the amount of water (d) sun or shade
5. 5.💧 Which change is this: a pond icing over? (a) evaporation (b) freezing (c) condensation (d) melting
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a sugar cube (d) a flower stem
8. 8.True or false: water from the oars goes backward. (a) False (b) True
9. 9.🛟 Does a coin float or sink in water? (a) floats (b) sinks
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
11. 11.⚖️ 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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
13. 13.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cotton wool (c) cold water (d) warm water
14. 14.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
16. 16.True or false: sugar stirred well dissolves slower. (a) True (b) False
17. 17.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) yeast (d) sticky tape
18. 18.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
19. 19.True or false: a spoon is not needed for the density tower. (a) False (b) True
20. 20.True or false: water from the oars goes forward. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a glass marble (b) an ice-cream stick (c) a metal key (d) a pebble
22. 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) a mirror (d) a drinking straw
23. 23.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
24. 24.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) the time we wait (c) how many drops form (d) sun or shade
27. 27.True or false: snow turning to water is freezing. (a) False (b) True
28. 28.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up
29. 29.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
30. 30.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
31. 31.True or false: a dry leaf floats on water. (a) True (b) False
32. 32.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a piece of foil (d) a cotton thread
33. 33.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.💧 Which change is this: sweat drying on skin? (a) melting (b) condensation (c) evaporation (d) freezing
35. 35.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a mirror (c) a magnet (d) two chairs
36. 36.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) one mixed colour (c) three separate layers (d) bubbles of gas
37. 37.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) safety scissors (c) a pencil (d) a ruler
38. 38.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) safety scissors (c) a paper cutter (d) sharp kitchen shears
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air

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