1. Topic: Origins of the Universe
Essential Question: How do scientists think our universe was created and what evidence supports it?

2. Defined as everything that physically exists All of space and time
Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Universe
Defined as everything that physically exists
All of space and time
All forms of matter and energy

3. Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
Big Bang Theory
All galaxies started from one huge mass of densely packed matter
The densely packed matter exploded with a “big bang” sending out matter and energy in all directions
Over time the matter grouped together to form the stars and galaxies that now exist

4. Big Bang

5. Evidence that the universe is expanding (supports Big Bang Theory)
Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Red Shift
Evidence that the universe is expanding (supports Big Bang Theory)
Distant galaxies give off a red light
The red end of the spectrum has the longest wavelengths

6. Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Red Shift
If a galaxy is moving far away, the wavelengths become longer (or stretched out)
All galaxies beyond our own show a red shift, so it is believed that the universe is expanding

7. Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Blue Shift
Galaxies that are moving closer give off a blue shift
If a galaxy is moving closer, the wavelengths become shorter giving off a blue shift

8. Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
Open Universe a model of the universe in which the universe expands forever Closed Universe A model of the universe in which the universe, because of gravity, everything ejected during the Big Bang will eventually be pulled back to a central point.

9. Now take some time…
Take 2 minutes to go over your notes and highlight or underline the main ideas that answer the essential question, you should not highlight everything:
Essential Question: How do scientists think our universe was created and what evidence supports it?

10. Time to use the left hand column
You will now write your own questions using the verbs provided.

11. Defined as everything that physically exists All of space and time
Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Universe
Defined as everything that physically exists
All of space and time
All forms of matter and energy
Choose one verb to write your question:
Define
Describe

12. All galaxies started from one huge mass of densely packed matter
Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
Choose one verb to write your question:
Define
Describe
Explain
Big Bang Theory
All galaxies started from one huge mass of densely packed matter
The densely packed matter exploded with a “big bang” sending out matter and energy in all directions
Over time the matter grouped together to form the stars and galaxies that now exist

13. Evidence that the universe is expanding (supports Big Bang Theory)
Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
Choose one verb to write your question:
Define
Describe
Explain
The Red Shift
Evidence that the universe is expanding (supports Big Bang Theory)
Distant galaxies give off a red light
The red end of the spectrum has the longest wavelengths

14. Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Red Shift
If a galaxy is moving far away, the wavelengths become longer (or stretched out)
All galaxies beyond our own show a red shift, so it is believed that the universe is expanding
Choose one verb to write your question:
Define
Describe
Explain

15. Galaxies that are moving closer give off a blue shift
Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
The Blue Shift
Galaxies that are moving closer give off a blue shift
If a galaxy is moving closer, the wavelengths become shorter giving off a blue shift
Choose one verb to write your question:
Define
Describe
Explain

16. Topic: Origins of the Universe Essential Question: How do scientists think our universe was created and what evidence supports it?
Open Universe a model of the universe in which the universe expands forever Closed Universe A model of the universe in which the universe, because of gravity, everything ejected during the Big Bang will eventually be pulled back to a central point.
Choose one verb to write your question:
Define
Describe
Explain

17. Now let’s write a summary
Look at each question you wrote on your own, and answer each question in a complete sentence.