Year 4 Scientific skills

Two objects put into water. A pencil and a coin. what do you observe?

• A pencil sinks

• A coin sinks

• A pencil and a coin sinks

• A pencil and a coin floats

Give and inference for the following observations:

A pencil floats anda coin sinks when put in water.

• A coin is more dense than a pencil

• A pencil is more dense than a coin

• A coin is denser in water in comparison to pencil

What if we tie many pencils with rubber band and put in the water?

• Many pencils tied together float

• Many pencils tied together sink

• I do not know

A variable that is changed in an investigation is called a manipulated variable.

• True

• False

Constant variable is the the variable that remains constant.

• True

• False

After one month, Aisha observes her plant is larger in size. What is the controlling variable that Aisha observes?

• Manipulated variables

• constant variables

• Responding variables