Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 550 · 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 magnet is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.⚖️ 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) sun or shade (b) how many drops form (c) the size of the bowl (d) the cling film cover
3. 3.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) food colour (d) glucose powder
4. 4.💧 Which of these is melting? (a) wet clothes drying (b) ice becoming water (c) water becoming ice (d) wet hair drying
5. 5.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
6. 6.🧺 Which of these is needed for the density tower? (a) a magnet (b) a tall clear glass (c) a balloon (d) a battery cell
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same straw (c) the same tape (d) how big we blow it
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it goes backward first (d) it travels less far
9. 9.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) a sunny window
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is kept the same. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of chalk (d) a steel spoon
13. 13.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) a tall clear glass (d) a balloon
15. 15.True or false: a pebble is less dense than water. (a) False (b) True
16. 16.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a paper clip (c) a battery cell (d) a pencil
17. 17.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a pebble (c) cooking oil (d) air
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
20. 20.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a magnet (d) a towel
22. 22.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
23. 23.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) the water increases (c) some water evaporates (d) it turns to salt
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) the wind (c) gravity (d) air pressure
26. 26.🛟 Which of these sinks in water? (a) a cork (b) a piece of thermocol (c) a feather (d) a metal key
27. 27.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a paper towel (d) a piece of foil
30. 30.🌈 In VIBGYOR, what number colour is red?
31. 31.True or false: cooking oil is denser than water. (a) False (b) True
32. 32.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a paper helicopter (c) a coin (d) a stone
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
34. 34.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) not at all (c) slower (d) faster
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a battery cell (c) a tall clear glass (d) honey
36. 36.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show (d) the amount of water
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
39. 39.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) chew them (d) give them to a baby
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) turmeric powder (d) bright sunlight

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