Science Revision Grade 2 IAS

What happens when water boils?

• It changes from a liquid to a solid

• It changes from a liquid to a gas

• It changes from a solid to a liquid

What will happen if you leave an ice cream in the sun?

• it will change from a solid to a liquid

• it will change from a liquid to a gas

• it will change from a liquid to a solid

What if I add salt to water?

• The water will change to a solid

• The water will freeze

• The water will stay as a liquid

Matter is everything that takes up ..

• space

• air

• things

How do I change water into ice?

• Heat it

• Melt it

• Freeze it

Which of these is not a fast change?

• volcano

• earthquake

• weathering and erosion

• flood

Baking a cake is

• an irreversible change

• a reversible change

A change that cannot be undone or changed back is

• reversible

• irreversible

Which fast change causes cracks on the Earth's surface?

• hurricane

• earthquake

• volcano

• flood

Which fast change is a powerful storm with strong winds and rain?

• hurricane

• earthquake

• flood

• volcano