Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 710 · 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.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) only yellow light (d) tiny bits of dust
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) False (b) True
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) two chairs (d) a magnet
5. 5.🥄 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) glucose powder (d) baking soda
6. 6.True or false: a coin sinks in water. (a) True (b) False
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a magnet (c) a strip of paper (d) a ruler
8. 8.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a pencil (d) turmeric powder
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the amount of water (c) the same glass (d) the same white paper
10. 10.🔍 Which is the odd one out? (a) a paper helicopter (b) a fluff of cotton (c) a toy parachute (d) a coin
11. 11.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
12. 12.🧺 Do we need cotton wool for the dissolving test? (a) not needed (b) needed
13. 13.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
14. 14.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in icy water (c) sugar in warm water (d) powdered sugar
15. 15.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) give them to a baby (d) keep them in your mouth
16. 16.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a medicine dropper
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
18. 18.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of sugar
20. 20.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) air pushes it up (d) the straw is magnetic
21. 21.True or false: cold water is needed for the dissolving test. (a) False (b) True
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
23. 23.🧺 Do we need sugar for the dissolving test? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) vinegar (c) a mirror (d) a magnet
25. 25.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they turn to ice (b) slower (c) faster (d) they never dry
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) turmeric powder (d) a sunny window
28. 28.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a magnet (d) a stiff postcard
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a mirror (b) sunlight (c) ice cubes (d) cling film
31. 31.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
33. 33.🛟 Which of these sinks in water? (a) a cork (b) a coin (c) an empty capped bottle (d) a feather
34. 34.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is hot (c) oil is less dense (d) oil is sticky
35. 35.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) sunlight (b) turmeric powder (c) ice cubes (d) a big bowl
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a towel (d) a mirror
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a towel (d) a battery cell
38. 38.🚁 Which of these falls fast through the air? (a) a steel spoon (b) a feather (c) a paper helicopter (d) a toy parachute
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is the one thing we change. (a) True (b) False

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