Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 822 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
2. 2.🛟 Which of these floats on water? (a) a steel spoon (b) a piece of thermocol (c) a glass marble (d) an iron nail
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) small test objects (d) a towel for spills
6. 6.True or false: an ice-cream stick floats on water. (a) False (b) True
7. 7.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a magnet (c) turmeric powder (d) a battery cell
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
9. 9.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
11. 11.🔍 Which is the odd one out? (a) a steel spoon (b) a feather (c) a dry leaf (d) a piece of thermocol
12. 12.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
13. 13.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a results table (d) small test objects
14. 14.🧊 Why does an ice cube float on water? (a) ice is very cold (b) water is sticky (c) ice is less dense (d) ice is magnetic
15. 15.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it floats (d) it bounces up
16. 16.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it can float (d) it turns to stone
17. 17.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it floats higher (d) it turns blue
18. 18.🛟 Which of these sinks in water? (a) a feather (b) a pebble (c) a ping-pong ball (d) an ice-cream stick
19. 19.🛟 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 splash everyone (d) to keep children safe
20. 20.🔍 Which is the odd one out? (a) an empty capped bottle (b) a piece of thermocol (c) an ice cube (d) a coin
21. 21.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
22. 22.⚖️ 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 measure it (b) we change it (c) we keep it the same
23. 23.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
25. 25.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
26. 26.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) yeast (d) small test objects
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) a cork (d) a coin
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) an ice-cream stick (d) a glass marble
31. 31.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
32. 32.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay
34. 34.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
35. 35.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) lots of salt stirred in (c) a little shaking (d) a few ice cubes
36. 36.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
37. 37.True or false: a metal key sinks in water. (a) False (b) True
38. 38.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a tub of water (d) a mirror
40. 40.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it still floats (d) it turns white

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