Scientific Theories
Big Bang Formation
The Universe
Red Shift
Analogy
100
2.Scientists use the ___________ to describe their observations on how galaxies are expanding.
Answer: Big Bang Theory
100
What is the Big Bang Theory?
Answer: The Big Bang Theory is a model explaining exactly how the universe began.
100
1. In what state did the universe emerge from? 
Answer: It emerged form a state of density and pressure (Big Bang)
100
1. What is light?
Answer: A form of energy that travels as a wave
100
1. What is the Balloon analogy?
Answer: Closely spread dots on surface spread slowly, while dots far apart spread quickly
200
Scientists believe that _______ are moving apart, but they originally started out to be closer together.
Answer: galaxies
200
The event that occurred when the universe emerged from this state is known as the ______ .
Answer: Big Bang
200
2. When did two scientists accidentally discover an unexpected radiation coming from all directions in space?
Answer: 1965
200
2. Does each galaxy emit their own spectrum/range of colours in a pattern? Yes or No?
Answer: Yes
200
2. What is the "slight glowing" like from the Big Bang?
Answer: It is like when you put out firewood an it still glows
300
Scientists estimate " Time Zero" to be about __ to __ billion years ago.
Answer: 10 to 15
300
All ______ of the universe, was packed together into one small, extremely dense, hot mass under pressure.
Answer: Matter
300
3. What did the radiation come from?
Answer: The Big Bang
300
3. How can we tell an object is moving?
Answer: We can tell an object is moving by red shift
300
3. In the Duck analogy when duck is not moving, are the waves constant or not?
Answer: Yes, they are constant
400
In the past, many cultures had different beliefs of how the universe began? True or False?
Answer: True - Many cultures held diff. beliefs of their own, however beliefs were NOT the same as scientific theories (cannot be tested, or proved with evidence.)
400
Even after the Big Bang occured, we now know EVERYTHING about the universe. True or False?
Answer: False - Scientists CAN describe what they think occured about a fraction of a sec. after the Big Bang, but not everything was revealed after the explosion.
400
4. When did the astronauts find evidence of galaxies moving?
Answer: 1912
400
4. What RED SHIFT?
Answer: Red shift refers to the shift in a wavelength of light to longer wavelengths of light
400
4. When the duck is moving, what happens to the wavelengths?
Answer: The wavelengths become shorter in one direction and longer in the other direction
500
What is an astronomer's job? a.) to explore b.) to discover galaxies c.) to solve the mystery of how the universe began
Answer: c.)
500
The Big Bang Theory is the ONLY way that the beginning of the universe can be explained. True or False?
Answer: False - There are many ways but in the past, there were people's beliefs, but each kind of model helps us understand how the world began.
500
5. What have the galaxies been doing since the big bang?
Answer: The galaxies have been expanding/spreading
500
5. Do ALL galaxies show red shift? Yes or No?
Answer:Yes
500
5. What is the Duck analogy similar to?
Answer: It is similar to the galaxies expanding and spreading apart.
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