C4-L12-D2-RANI-SCI-LQ

Multiple Choice

When placed in water, what happens to a wooden block?

• It sinks

• It floats

• It dissolves

• It breaks

Multiple Choice

Why does an iron nail sink in water?

• It has air inside

• It is made of heavy material

• It is flat

• It is shiny

Multiple Choice

Which shape floats better in water?

• A flat, spread-out shape

• A very small shape

• A sharp shape

• A heavy shape

Multiple Choice

Objects like balloons and sponges float easily because they contain ______.

• Water

• Air

• Stones

• Iron

Multiple Choice

Why do life jackets help people float in water?

• They are colourful

• They are heavy

• They are filled with air and light material

• They are waterproof

Multiple Choice

Impurities are substances that make water clean.

• TRUE

• FALSE

Match

Match the impurity with its type.

• Salt →

• Sugar →

• Sand →

• Mud →

Soluble

Soluble

Insoluble

Insoluble

• Soluble

• Soluble

• Insoluble

• Insoluble

Multiple Choice

Which impurity cannot be seen once it dissolves in water?

• Sand

• Mud

• Salt

• Small stones

Multiple Choice

Which of these objects is most likely to float in water?

• Stone

• Iron nail

• Wooden block

• Coin

Multiple Choice

Objects with trapped air float more easily in water.

• TRUE

• FALSE

Multiple Choice

Which factor does NOT affect floating or sinking?

• Material

• Shape

• Air content

• Colour

Open Ended

Why do life jackets help people float in water? Write two sentences.