Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 770 · 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 mirror is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.True or false: a flower stem lets water climb up it. (a) False (b) True
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the drop height (c) the paper clip (d) time to reach the floor
4. 4.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the air above (d) the water
5. 5.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) sunlight (c) a battery cell (d) water
8. 8.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) on top of the oil (d) under the honey
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
10. 10.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) at the very bottom (d) in the water layer
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of the layers (c) the same three liquids (d) the order of pouring
12. 12.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a roof edge (d) a high window ledge
13. 13.True or false: a glass marble is less dense than water. (a) True (b) False
14. 14.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the coldest (c) it is the densest (d) it is yellow
15. 15.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the kind of flower
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) a balloon (d) two chairs
18. 18.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it travels farther (d) it speeds up
19. 19.⚖️ 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 water (b) the kind of flower (c) time for colour to show (d) the length of the stem
20. 20.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) small test objects (c) a towel for spills (d) a results table
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) small test objects (c) a tub of water (d) a results table
24. 24.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) sugar (d) food colour
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) faster (d) it stops in the air
29. 29.True or false: sugar is needed for the dissolving test. (a) False (b) True
30. 30.True or false: a drinking straw works by magnetism. (a) True (b) False
31. 31.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
32. 32.True or false: a balloon is needed for the dissolving test. (a) True (b) False
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🔍 Which is the odd one out? (a) wet clothes drying (b) butter going runny (c) a puddle drying up (d) wet hair drying
35. 35.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it gets too heavy (d) it can pop loudly
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same string (c) the slope of the string (d) the same tape
37. 37.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
38. 38.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
39. 39.True or false: turmeric powder is needed for the density tower. (a) False (b) True
40. 40.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed

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