The Universe Pretest on the Universe

How is a theory different from a guess?

• A theory cannot be disproven; a guess can be

• A theory is backed up by hard evidence; a guess is not

• A theory is agreed upon by scientists; a guess is only agreed on by laypeople

• A theory is usually very old; a guess is usually very new

Which word best describes a singularity?

• a. Large

• b. Cold

• c. Dense

• d. Flammable

What do the initial moments after the Big Bang have in common with the universe as it exists now?

• a. All the stars, galaxies, and planets that exist today were formed just a few moments after the Big Bang.

  
  

• b. The universe back then could not sustain life, and it cannot sustain life now.

• c. The universe was extremely hot then, and it is still extremely hot now.

• d. The universe began expanding then, and it is still expanding today.

According to the Big Bang theory, how old is the universe?

• a. 6,000 years

• b. 65 million years

• c. 4.5 billion years

• d. 14.5 billion years

What is one major piece of evidence that the Big Bang theory is correct?

• a. Astronomers have detected leftover radiation from the Big Bang

• b. Everything in the universe has remained in the same location for billions of years

• c. Astronomers have discovered that the universe is no longer expanding

• d. Astronomers have discovered evidence that the universe will soon begin contracting in a "Big Crunch"

Most scientists believe the Big Bang Theory explains which of the following questions?

• How our planets and moons formed

• How our universe began

• How the sun turns hydrogen into helium

• How fast light travels through space

Which elements are most

abundant in the visible

universe?

• Hydrogen and Carbon

• Carbon and Helium

• Hydrogen and Oxygen

• Hydrogen and Helium

As galaxies move away from our galaxy

a shift on the electromagnetic spectrum

(EMS) is noticed. This phenomena is

called _____________.

• redshift

• blueshift

• unshift

• blackshift

How does Cosmic Microwave Background Radiation support the Big Band Theory?

• Microwaves are found everywhere in the universe.

• Microwaves occurred at the time of the Big Bang

• Microwaves are useful in our everyday lives

• Only A & B

Red light has a ______ pitch, or frequency, than the blue end.

• Low

• High

• the same

• nice