Earth Science Quiz 1

If you believed in the oscillating universe theory, you would say, _____.

"In the distant future, we're all going to be crushed"

Many scientists agree that the universe is about *BLANK* years old.

13 billion

He originally suggested that galaxies are moving farther away. He also suggested that the distance of a galaxy is proportional to its recessional speed. He is _____.

Edwin Hubble

Has the question of the origin of the universe been solved?

No, although there are several theories with increasing evidence, there is still no way to know for sure how it occurred.

Which statements are true regarding the scientific evidence supporting the big bang theory?

T -Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang. T - Quasars have been observed exploding and expanding from a single, hot, dense singularity. A primordial form of helium gas was found by the Endeavor space shuttle. T - A redshift of light emitted by stars and galaxies indicates the universe is expanding. Redshift and blueshift of light emitted by stars and galaxies indicate that universe is expanding and contracting.

Which statements are true regarding the cosmological principle?

T- The universe looks the same from all directions, but can change and evolve over time. The universe looks the same from all directions, and hasn't and won't change or evolve over time. The universe can't be studied scientifically because scientists can't directly test their hypotheses. T - Scientists can study the universe because the cosmological principle suggests that any physical laws or processes are the same for the entire universe.

I want to know about the future of the universe. I should study _____.

cosmology

The Doppler effect suggests that sound waves are relative to the observer. You know if an object is coming or going from the sound it makes. Light waves follow the Doppler effect also. However, instead of sound changing, you know if an object is coming or going _____.

from the color of the light.

A scientist who studies earthquakes is a _____.

geologist

Steady state theorists support the perfect cosmological principle, which suggests the universe looks the same from all directions, but *BLANK* over time.

hasn't and won't change or evolve

The _____ theory explains how our universe became so structured and uniform.

inflation

I want to study marine life, like dolphins and sharks. I should learn about _____.

oceanography