Viewer Mail From England! | Science for Kids

What is the hardest part of your tooth?

• Dentin

• Pulp

• Enamel

• Bone

Why is it important to brush your teeth at least twice a day?

• To make them shiny.

• To help them grow back if you lose them.

• To prevent cavities and keep them healthy.

• To make them softer.

What happens when the sun warms up water in lakes and oceans?

• It turns into ice.

• It changes into water vapor.

• It becomes colder.

• It disappears completely.

What are clouds in the sky made of?

• Gas

• Tiny droplets of liquid water

• Air

• Cotton