Unit Nine - Astronomy - The Universe

Question 1

Definition of Universe

Answer 1

All the space, matter and energy that exists in any place

Question 2

Definition of the Big Bang (3)

Answer 2

1. Universe began as a hot, small and dense point
2. Force causes the intense burst of energy
3. Distributing all matter and energy in all directions

Question 3

Definition of Electromagnetic Energy

Answer 3

Energy radiating through space as waves

Question 4

What is Background Radiation (3)?

Answer 4

1. Evidence that the Big Bang Theory occured
2. Left over energy created by the explosion
3. Found in all parts of the universe

Question 5

Definition of the Doppler Effect (3)

Answer 5

1. Evidence that the Big Bang Theory occured
2. Shifting wavelength of electromagnetic energy
3. Due to Relative motion between the energy source and the observer

Question 6

Definition of Blueshift (3)

Answer 6

1. Observer & Energy Source Get Closer
2. Wavelength Gets Shorter
3. Visible Light Shifts to Blue

Question 7

Definition of Redshift (3)

Answer 7

1. Observer & Energy Source Get Farther
2. Wavelength Gets Longer
3. Visible Light Shifts to Red