SPACE REVISION

_____________: A dense cloud of gas and dustNEBULA

The nebula begins to contract due to __________ and the pressure and temperature increase and becomes a ________________.

gravity

PROTOSTAR

When the temperature gets hot enough, a _______________ reaction begins and a _______ ____________ star is born.

fusionMAIN SEQUENCE

A star loses ____________ during fusion as energy is released. This decreases the star’s gravity.

Over time, a star will expand, becoming a ___________ ____________, when the outward force of ________________ is greater than the inward force of ______________.

mass

RED GIANT

fusiongravity

After swelling to around 300-400 time its size, the red giant cools and the outer layers of _____ and ______ expand and surround the star. This planetary body is know as a ___________ ____________.

The core of the star shrinks in size and cools down, becoming a _________ ____________.

White Dwarf

WHITE DWARF

dustgasPLANETARY NEBULA

A ___________________ is an _________________ that marks the end of a very massive star’s life. When it occurs, the exploding star can outshine all of the other stars in the galaxy in total for several days and may leave behind only a crushed core.

SUPERNOVA

explosion

The life cycle of stars depends on their mass.

Small and medium stars become __________________ once they die.

Larger stars become novae and die as: ______________

A black hole is an extremely massive remnant from which _______ cannot escape

A neutron star is an imploded core of an exploded star made up almost entirely of neutrons. A teaspoon of their material would weigh more than the weight of all of cars, buses and trucks in the Australia

NEUTRON STARS

BLACK HOLE

BLACK DWARVES

The most massive stars become supernovae and die as a: ______________________

http://chandra.harvard.edu/photo/2004/rxj1242/index.html

light

THE DOPPLER EFFECT

Worksheet :D

**Missing Labels on page 2**Blue Red

TECHNOLOGIES FOR SPACE EXPLORATION

1. What is infra-red technology?

2. How is infra-red technology useful for seeing things in space?

3. Why would we want a telescope on a plane?

4. What are light curves?

5. What does a light curve tell us about a stars life cycle?

6. What is spectral analysis?

7. What does spectral analysis tell us about a star?