Scientific Theories
Big Bang Formation
CMB
Red Shift
Abundance of Elements
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

What does CMB Stand for?

Answer: Cosmic Microwave Background Radiation

100
1. What is light?
Answer: A form of energy that travels as a wave
100

1. What is the most abundant element in the universe?

Answer: Hydrogen

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

What type of Radiation is found all over the universe?

Answer: Microwave

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 second most abundant element in the universe?

Answer: Helium

300

Scientists estimate " Time Zero" to be about __  billion years ago.

Answer: 13.5

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. Which type of elements are the easiest to form?

Answer: Light elements (Hydrogen and Helium)

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. What company first noticed the CMB as a hindrance to their product?

Answer: AT&T (a telephone company)

400
4. What RED SHIFT?
Answer: Red shift refers to the shift in a wavelength of light to longer wavelengths of light
400

4. Why were heavier elements not formed in the big bang?

Answer: It was too hot to form big elements

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 scientific law helps support the idea of leftover energy from the big bang still hanging out in our current universe?

Answer: The Law of Conservation of Energy

500
5. Do ALL galaxies show red shift? Yes or No?
Answer:Yes
500

5. What percent of our universe is composed of our most abundant elements?

Answer: 98%

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