Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 158 · 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.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
2. 2.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) from your raised hand (c) a wobbly chair (d) a roof edge
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) the size of the bowl (c) the cling film cover (d) sun or shade
5. 5.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) small test objects (c) a tub of water (d) a towel for spills
7. 7.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🔍 Which is the odd one out? (a) a coin (b) a steel spoon (c) a pebble (d) a ping-pong ball
10. 10.True or false: a cotton thread does not let water climb. (a) False (b) True
11. 11.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a battery cell (c) a paper clip (d) a strip of paper
12. 12.🔍 Sand is stirred into water. What do you see after a while? (a) it floats up (b) it turns blue (c) it settles at the bottom (d) it dissolves
13. 13.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it dissolves (d) it sinks faster
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
16. 16.True or false: honey is denser than water. (a) True (b) False
17. 17.🛟 Does a feather float or sink in water? (a) floats (b) sinks
18. 18.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
20. 20.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
21. 21.True or false: a toy parachute falls slowly through the air. (a) False (b) True
22. 22.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) powdered sugar (c) sugar in icy water (d) a big sugar cube
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.🔍 Which is the odd one out? (a) an empty capped bottle (b) a glass marble (c) a ball of clay (d) a metal key
25. 25.🔍 Which is the odd one out? (a) an ice-cream stick (b) a cork (c) an ice cube (d) a metal key
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a glass of water (d) yeast
27. 27.🔍 Which is the odd one out? (a) a glass marble (b) cooking oil (c) a coin (d) honey
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.📘 What pulls the paper helicopter down to the floor? (a) gravity (b) air pressure (c) the wind (d) magnetism
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) the amount of water (c) the length of the stem (d) time for colour to show
31. 31.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False
32. 32.True or false: water is not needed for the water cycle bowl. (a) True (b) False
33. 33.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) an ice cube (d) a glass marble
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) the same three liquids
35. 35.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) the bowl itself (c) the air outside (d) water warmed by the Sun
36. 36.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it flies upward (c) it stays still in air (d) it turns into a ball
37. 37.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
38. 38.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
39. 39.🔍 Which is the odd one out? (a) a ball of clay (b) a feather (c) a cork (d) an empty capped bottle
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the amount of clay (c) the shape of the clay (d) whether it floats

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