Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 770 · 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.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a balloon (d) a towel for spills
2. 2.🔍 Which is the odd one out? (a) a piece of thermocol (b) a feather (c) a coin (d) an empty capped bottle
3. 3.⚖️ 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 amount of clay (c) the shape of the clay
4. 4.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it turns white (d) it sinks
5. 5.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it can float (d) it dissolves
6. 6.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a mirror (c) a magnet (d) a results table
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
9. 9.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
10. 10.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it turns blue (d) it melts
11. 11.True or false: a feather floats on water. (a) True (b) False
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
14. 14.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) yeast
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
18. 18.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) both of them (d) the small pebble
21. 21.🔍 Which is the odd one out? (a) a piece of thermocol (b) a steel spoon (c) a feather (d) a cork
22. 22.🛟 Which of these floats on water? (a) a ball of clay (b) a coin (c) a glass marble (d) a ping-pong ball
23. 23.True or false: a metal key sinks in water. (a) True (b) False
24. 24.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) a tub of water (d) turmeric powder
25. 25.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
26. 26.⚖️ 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
27. 27.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) a dry leaf (d) a coin
28. 28.🛟 Which of these floats on water? (a) a cork (b) a pebble (c) a steel spoon (d) an iron nail
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a towel for spills (d) a mirror
30. 30.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
31. 31.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it sinks (d) it dissolves
32. 32.🔍 Which is the odd one out? (a) a cork (b) an ice cube (c) a glass marble (d) an ice-cream stick
33. 33.🔍 Which is the odd one out? (a) an iron nail (b) a ball of clay (c) a piece of thermocol (d) a glass marble
34. 34.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) a balloon
35. 35.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
36. 36.True or false: an ice-cream stick floats on water. (a) False (b) True
37. 37.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a ping-pong ball (c) a feather (d) a metal key
38. 38.🛟 Which of these sinks in water? (a) an ice cube (b) a coin (c) a dry leaf (d) a ping-pong ball
39. 39.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
40. 40.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) lots of salt stirred in (d) a little shaking

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