Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 853 · 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: an ice cube is denser than water. (a) False (b) True
2. 2.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it does not fall (c) it spins the other way (d) it turns blue
3. 3.🍯 Which of these is denser than water? (a) very salty water (b) a cork (c) an ice cube (d) cooking oil
4. 4.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a strip of paper (c) a pencil (d) a battery cell
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
8. 8.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) spilled oil is slippery (d) oil makes it rain
9. 9.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) how full the glass is (c) whether the card stays (d) the same glass
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a balloon (c) two clear glasses (d) a teaspoon
12. 12.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a stone (c) a toy parachute (d) a glass marble
13. 13.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) sunlight (c) ice cubes (d) yeast
14. 14.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to drops (b) it disappears (c) it turns to smoke (d) it turns to salt
15. 15.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) slower (c) it floats up (d) faster
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) distance it travels (c) the same tape (d) the slope of the string
17. 17.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a roof edge (c) from your raised hand (d) a wobbly chair
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the amount of water (c) the room it stands in (d) time for colour to show
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) yeast (d) a tall clear glass
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a glass of water
21. 21.True or false: a toy parachute falls fast through the air. (a) False (b) True
22. 22.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) turmeric powder (c) cooking oil (d) a spoon
23. 23.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) they turn to ice (c) slower (d) faster
24. 24.🥄 Which of these does not dissolve in water? (a) sawdust (b) table salt (c) food colour (d) glucose powder
25. 25.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
26. 26.True or false: water becoming ice is condensation. (a) False (b) True
27. 27.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a crumpled paper ball (c) an open sheet of paper (d) a feather
28. 28.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the bowl freezes (b) more drops form (c) fewer drops form (d) the water turns red
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
30. 30.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) more friction, less far (d) it goes faster
31. 31.True or false: a strip of paper is not needed for the paper helicopter. (a) True (b) False
32. 32.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
33. 33.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
34. 34.⚖️ 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 pouring”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the amount of water (c) the stirring (d) the water temperature
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a steel spoon (d) a plastic ruler
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a towel for spills (c) a results table (d) a tub of water
39. 39.True or false: powdered sugar dissolves slower. (a) True (b) False
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the kind of paper (c) the length of the blades (d) time to reach the floor

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