Science Unit 6

Question 1

Spiral Galaxy’s

Answer 1

Have a bulge at the center and spiral arms.
Caused by the rotation of the galaxy
The arms are formed by stars at the outer edge of the Galaxy
Rich in dust; new stars are born their
Held together by gravity

Question 2

Elliptical Galaxy’s

Answer 2

Very bright centers very little dust and gas
Mostly contain old stars
Their is so little gas, few new stars are forming
Mostly old stars
Held together by gravity

Question 3

Irregular Galaxy’s

Answer 3

Irregular shape don’t fit into any one category
The gravity of the spiral galaxy’s may be distorting the shape of their small neighbors.

Question 4

Light Year

Answer 4

Distance a star travels in one year
(approximately 9.5 trillion kilometers)

Question 5

H-R Diagram

Answer 5

graph showing the relationship between a star’s surface temperature and absolute magnitude

Question 6

Characteristics of our Sun

Answer 6

5 billion years old
Medium sized star
Average brightness
Yellow colored star

Question 7

Very small stars

Answer 7

White Dwarfs

Question 8

Very large stars

Answer 8

Giants

Question 9

Extremely Large stars

Answer 9

Super Giants

Question 10

Small to Average sized star life cycle

Answer 10

Starts at the Steller Nebula
To medium star
Red Giant
Planetary Nebula
Lastly White Dwarf

Question 11

Massive star life cycle

Answer 11

Starts at Steller Nebula
Massive Star
Red Super Giant
Supernova
Neutron Star/ Black Hole

Question 12

White Dwarf

Answer 12

A small hot star that is near the end of its life

Question 13

Red Dwarf

Answer 13

A low mass star and may be some of the oldest stars in the galaxy

Question 14

Red Giant

Answer 14

Star that expands and then cools once it runs out of hydrogen. Very massive, it becomes a super giant

Question 15

Supernova

Answer 15

The death of a large star by explosion
Brighter than the entire galaxy for several days

Question 16

Electromagnetic radiation

Answer 16

Form of energy that exhibits wavelike behaviors as it travels through space

Question 17

Wavelength

Answer 17

Distance between two adjacent crests or troughs of wave

Question 18

Shorter the wavelength?

Answer 18

Higher the frequency
(more energy)

Question 19

As the wavelength decreases??

Answer 19

Frequency increases
(more energy)

Question 20

Doppler Shifts

Answer 20

When a source of waves moves relative to your position the frequency of waves you receive changes.
Created by Christian Doppler