Stars and Distances POD 1 A collection of

Stars and Distances

POD 1. A collection of STARS, gas, clouds and dust pulled in by the force of gravity is called a ? 2. A collection of gas, clouds and dust pulled in by the force of gravity is called a? 3. The birth place of stars! 4. The universe is getting _______er and getting _______er. 5. A giant explosion of a star is called a?

1. Add in the caption box from the Power. Point Show. 2. Color the star as they appear in the Power. Point Show. 3. Do not forget to color in the temperature bar at the bottom of the diagram.

Stars are classified in two ways: Size of the star Temperature of the star

Main Sequence Star

Red Giant

White Dwarf

HR Diagram • Check for Temperature of Stars • Blue – Hot • Red - Cooler

Betelgeuse (Red Star) Rigel (Blue Star)

Distances in Space • Light-year – Unit to measure the distance in space for long distances. – The distance that light can travel in one year. – 186, 000 miles (300, 000 km) per second 4. 4 light year

Define: Light-year at the bottom of the page. Use the internet to find the distances between 5 stars from our Sun in light-years. Color the each star to the corresponding temperature of the star.

Distances in Space • Astronomical Units – Unit to measure the distance within our Solar System

Distances in Space 1 Astronomical Unit

Distances in Space ? Astronomical Unit

Distances in Space ? Astronomical Unit

Distances in Space ? Astronomical Unit

Define: Astronomical Unit at the bottom of the page. Use the internet to find the distances between planets from our Sun in Astronomical Units. Color the each planet to the corresponding appear.

Distances in Space • Tell your right neighbor about Light year • Tell your left neighbor about Astronomical unit.