The Universe and Big Bang

How long is one light year?

• 9.46 trillion kilometers

• 5.88 trillion miles

• 1.5 million kilometers

• 300,000 kilometers

What do most astronomers believe about the universe?

• It is static and unchanging.

• It is constantly expanding.

• It is shrinking over time.

• It is in a steady state.

Tags

NGSS.HS-ESS1-2

If a galaxy or star is moving towards us, the light appears (think about length and color) …

• blueshifted

• redshifted

• unchanged

• invisible

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the universe?

• Our solar System.

• All of space and everything in it.

• The Milky way galaxy.

• Only the dark matter in space.

True or False: Star Clusters are groups of stars that formed from the same nebula around the same time.

• True

• False

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

Answer explanation

The Big Bang Theory primarily addresses the question of how our universe began. It postulates that the universe originated from a singularity, expanding over billions of years to its current state. While other options involve celestial phenomena, they are not directly explained by the Big Bang Theory.

Tags

NGSS.HS-ESS1-2

Which elements are most abundant in the visible universe?

• Hydrogen and Carbon

• Carbon and Helium

• Hydrogen and Oxygen

• Hydrogen and Helium

Answer explanation

The visible universe consists mostly of Hydrogen and Helium. These elements were formed in the first few minutes after the Big Bang. Carbon and Oxygen are also abundant, but not as much as hydrogen and helium.

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

Answer explanation

Cosmic Microwave Background Radiation (CMBR) supports the Big Bang Theory because microwaves are found everywhere in the universe. These microwaves are the afterglow of the Big Bang, and their uniform distribution across the universe provides strong evidence for this theory.

Tags

NGSS.HS-ESS1-2

How does the abundance of hydrogen and helium support the Big Bang Theory.

• Hydrogen and helium are elements on the Periodic Table

• Hydrogen and helium are in the same ratio throughout the universe.

• Hydrogen and helium have many current uses today

Answer explanation

The Big Bang Theory is supported by the uniform ratio of hydrogen and helium throughout the universe. This consistent ratio indicates that these elements were formed very early in the universe's history, as proposed by the Big Bang Theory, rather than being generated in stars.

Tags

NGSS.HS-ESS1-2

Space and all the matter and energy in it. 

• Clusters

• Universe

• voids

• Light Year

Answer explanation

The question is asking about the term for 'Space and all the matter and energy in it'. Among the given options, 'Universe' is the correct term. The 'Universe' means all of space and everything in it including stars, planets, galaxies, etc. The other options 'Clusters', 'voids', and 'Light Year' do not fit the description provided in the question.