Topic: Origins of the Universe

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

Topic: Origins of the UniverseEssential 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

Topic: Origins of the UniverseEssential 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

Big Bang

Topic: Origins of the UniverseEssential 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

Topic: Origins of the UniverseEssential 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

Topic: Origins of the UniverseEssential 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

Topic: Origins of the UniverseEssential 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.

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?

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

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

Topic: Origins of the UniverseEssential 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

Topic: Origins of the UniverseEssential 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

Topic: Origins of the UniverseEssential 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 • 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

Topic: Origins of the UniverseEssential 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 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

Topic: Origins of the UniverseEssential Question: How do scientists think our universe was created and what evidence supports it? Choose one verb to write your question: Define Describe Explain 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.

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

Topic: Origins of the Universe