Science

THE SUN, MOON & STARS

One million Earths could fit inside the Sun! The Sun or Sol, is the star at the center of our solar system and is responsible for the Earth’s climate and weather. The Sun is an almost perfect sphere. If a hollow Sun was filled up with spherical Earths then around 960,000 would fit inside. The Sun’s surface area is 11,990 times bigger than that of the Earth’s.

To learn more about The Sun, Moon and Stars, click on the links below.

LIVING SYSTEMS

Did you know that the human heart weighs between 7 and 15 ounces and is a little larger than the size of your fist? By the end of a long life, a person's heart may have beat (expanded and contracted) more than 3.5 billion times. In fact, each day, the average heart beats 100,000 times, pumping about 2,000 gallons of blood.

To learn more about living systems, click on the links below.

Circulatory System

Respiratory System

Digestive System

Excretory System

American Heart Association

The Circulatory System (video)

Human Heart Facts

The Mysterious Human Heart

The Texas Heart Institute

Digestive System (video)

Human Digestive System

Your Digestive System

OCEAN LIFE

For more information about Ocean life, click on the links below:

Sea World

The National Aquarium

The Ocean Portal

DINOSAURS

The dinosaurs were among the most successful animals ever to live on the Earth. Their reign lasted over 100 million years - and if birds evolved from the dinosaurs, then their descendents are still alive today. Click on the dinosaur below to learn more.