Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 314 · 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 towel for spills (b) a tub of water (c) small test objects (d) a magnet
2. 2.⚖️ 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
3. 3.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
4. 4.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it dissolves (c) it sinks (d) it floats
5. 5.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
6. 6.True or false: a piece of thermocol sinks in water. (a) False (b) True
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
8. 8.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
9. 9.⚖️ 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
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
11. 11.True or false: an ice cube sinks in water. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ 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) False (b) True
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the tub of water
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) small test objects (c) a tub of water (d) a results table
16. 16.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
17. 17.🔍 Which is the odd one out? (a) a piece of thermocol (b) a feather (c) a pebble (d) an ice cube
18. 18.⚖️ 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
19. 19.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) more plain water (d) lots of salt stirred in
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a battery cell (d) a tub of water
21. 21.🔍 Which is the odd one out? (a) a cork (b) an iron nail (c) an ice-cream stick (d) an empty capped bottle
22. 22.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
23. 23.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is very cold (c) water is sticky (d) ice is less dense
24. 24.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
25. 25.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a towel for spills (d) a mirror
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) small test objects (c) a results table (d) a towel for spills
28. 28.True or false: a ping-pong ball sinks in water. (a) False (b) True
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) small test objects (d) yeast
30. 30.🛟 Which of these floats on water? (a) a steel spoon (b) a feather (c) an iron nail (d) a metal key
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
32. 32.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a mirror (d) yeast
33. 33.🛟 Which of these sinks in water? (a) a dry leaf (b) a cork (c) a piece of thermocol (d) a metal key
34. 34.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a coin (b) a metal key (c) an empty capped bottle (d) a steel spoon
36. 36.True or false: a coin sinks in water. (a) True (b) False
37. 37.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a cork (c) a piece of thermocol (d) a pebble
38. 38.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
39. 39.⚖️ 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) True (b) False
40. 40.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False

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