Science: Sink or Float Testing Objects in Water Worksheet

Question 1

Look at a plastic spoon. Do you predict it will sink or float in water? Circle your prediction: sink or float.

Accepted Answer

A plastic spoon will usually float because it is light and can stay on top of the water.

Question 2

A small rock is placed in a cup of water. What will probably happen?

Accepted Answer

The small rock will probably sink because rocks are usually heavy for their size.

Question 3

A cork is placed in water. Does the cork sink or float?

Accepted Answer

The cork floats because it is light and does not let much water inside.

Question 4

Draw one object you think will float in water. Write its name if you can.

Accepted Answer

A correct answer could be a leaf, cork, plastic bottle cap, or another object that can float in water.

Question 5

Draw one object you think will sink in water. Write its name if you can.

Accepted Answer

A correct answer could be a rock, coin, metal key, or another object that usually sinks in water.

Question 6

A leaf falls into a puddle. Will the leaf most likely sink or float?

Accepted Answer

The leaf will most likely float because it is light and flat.

Question 7

A metal coin is placed in a bowl of water. What do you observe after testing?

Accepted Answer

The metal coin sinks to the bottom of the bowl.

Question 8

Sort these objects into two groups: feather, rock, cork, coin. Write or say which ones float and which ones sink.

Accepted Answer

The feather and cork usually float. The rock and coin usually sink.

Question 9

A toy boat floats on water. What word tells what the boat does?

Accepted Answer

The word is float because the toy boat stays on top of the water.

Question 10

A marble goes to the bottom of a jar of water. What word tells what the marble does?

Accepted Answer

The word is sink because the marble goes down to the bottom of the water.

Question 11

You test a rubber ball in water. It stays on top. What should you record: sink or float?

Accepted Answer

You should record float because the rubber ball stays on top of the water.

Question 12

You test a metal key in water. It goes to the bottom. What should you record: sink or float?

Accepted Answer

You should record sink because the metal key goes to the bottom of the water.

Question 13

Before testing, Mia says, 'I think the pencil will float.' What is Mia making?

Accepted Answer

Mia is making a prediction because she is telling what she thinks will happen before testing.

Question 14

After testing, the pencil floats. Was Mia's prediction correct?

Accepted Answer

Mia's prediction was correct because she said the pencil would float, and it did float.

Question 15

Why is it important to test objects in water instead of only guessing?

Accepted Answer

Testing is important because it helps us find out what really happens. Scientists use tests to learn from observations.

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