What does the circulatory system carry around the body?

What are the tiny blood vessels that connect arteries and veins?

What is the red pigment in blood that carries oxygen?

Which part of the blood helps to fight germs?

Which organ helps us breathe in oxygen?

What gas do we breathe out?

The trachea is also called the:

The small air sacs in the lungs are called:

What happens to the diaphragm when we breathe in?

The main function of the reproductive system is to:

Which organ in females carries the baby before birth?

Which is the male reproductive cell?

Which is the female reproductive cell?

What happens when a sperm joins with an ovum?

Which of these is caused by bacteria?

Which system helps protect us from diseases?

What should we do to prevent the spread of germs?

Which disease is caused by a virus?

What do vaccines help our bodies do?

Which of these is a property of metals?

A material that can be hammered into thin sheets is said to be:

Which property describes how easily a substance can be stretched into a wire?

Glass is ________.

Which of the following materials is flexible?

Materials that allow heat to pass through are called:

Which of the following is an insulator?

Why do we use metal for cooking pots?

The plastic coating on electric wires is used because it:

Which of these materials is both a good conductor of heat and electricity?