Astronomy Test 2

Ch 22

The hallmarks of science include generating models, testing predictions and ______.

making explanations of nature

According the proposed models of the Big Bang Theory, there was atoms formed several hundred thousands years

after the Big Bang. What were those atoms?

Hydrogen and Helium

According to the model of the Big Bang Theory, how old is our solar system?

about 4.6 billion years old

Why are we studying alternative theories of the universe's origin if they are not scientifically accepted?

There is merit in discussing what is scientific and what is not

What is a light year?

The distance light travels in a year

In simple terms, which best represents the Big Bang Theory?

The universe began as a single point and has been expanding ever since

A small decoration home water system recycles water in a closed system. The water then flows out of the pool and back down the cliff, creating a continuous cycle. This system is most comparable to which type of origin of the universe?

steady state

The ancient Egyptians believed the universe came from Ra. Ra is the sun god of ancient Egypt and one of the most important deities in the Egyptian pantheon. He is believed to have created the world from chaos. This universe is most comparable to

which type of origin of the universe claim?

Creationism

Imagine a pendulum infinitely swinging inside a clock. The pendulum swings back and forth, but it always returns to the same vertical position in a repeated fashion.

This system is most comparable to which type of origin of the universe?

Oscillating

What are the two key observational facts that led to widespread acceptance of the Big Bang model?

the cosmic background radiation and the high helium content of the universe

What do we mean in class when we refer to the universe?

Everything in existance

A major characteristic of the mirror universe is the claim that there exists

a single parallel universe

Can multiple alternative "theories" of the universe be correct?

Yes - There is no proof for any right now, but it's possible since some can overalp

A movie on a computer screen is an example of a ________ universe because it is a two-dimensional representation of a three-dimensional world. The movie screen is analogous to the surface and the images on the screen are analogous to the objects in the three-dimensional universe

Flat Hologram Theory

______________ a philosophical thought experiment that argues that the universe could have been created with all the appearance of being much older.

Last Thursday-Ism

Imagine the universe in a system enclosed by a large soap bubble. The soap bubble is made up of a thin film of soap, which is filled with air. The soap bubble is very fragile, but it can be very strong if it is inflated with enough air.

This system is most comparable to which type of origin of the universe?

Cellular Cosmonogy

What is a major charachteristic of the Big Bang Theory?

There was rapid expansion of the universe

Based on the prevailing scientific theory of the Big Bang, what was the timeframe for the formation for the first galaxies and stars?

200-400 million years after the Big Bang

The furthest stars we as humans are able to observe is about 10 to 14 billion light years away. We are developing telescopes that can see further, but cannot see further objects.

This lines up with the Big Bang Theory's idea that the universe is how old?

About 13.7 billion years

A digital simulation and creationism are similar in that

a programmer can be viewed as a supernatural creator of the universe