A NEW STAR N O I T C U D O R T N I Deep in space a dust cloud churns Tiny specks of matter move in gases The mass swells in one spot The dust and gases gather together They collapse under their gravity The pressure makes a hot core 4
The hot core attracts more dust and gases They swirl around the core The core becomes hotter It becomes massive Eventually it forms a new star This is how our sun was born The sun is a star It took 50 million years for the sun to fully form This happens throughout the universe Stars are continually born grow old and die The dust and gases in space can create objects besides stars They also form planets moons asteroids and other space objects All matter on the sun and Earth came from space
WHAT IS MATTER Everything is made of matter It fills the air you breathe It is the water in the ocean It is what your body is made out of It is what plants are made out of too Small particles of matter form atoms An atom is the basic unit of a chemical element Atoms combine to make molecules Groups of atoms and molecules make up everything in our world Everything you eat is made of matter All matter has mass and takes up space Some matter you can see and touch like this book Other matter is harder to see like oxygen Different kinds and forms of matter are found on Earth 1 R E T P A H C 6
MEASURE IT MEASURING MATTER RULER Used for measuring length SCALE Used for measuring weight BEAKER Used for measuring volume Not all matter can be measured in the same way Different types of matter require different tools to measure them Here are some tools scientists use to measure matter Solid matter can be measured with a ruler Or it can be weighed on a scale Other matter is in liquid form It has to be measured in a container such as a beaker 7
