Big Bang Theory & Redshift

What is Hubble's Law?

• Hubble's Law states that the farther away a galaxy is, the faster it is moving away from us.

• Hubble's Law states that galaxies are stationary and do not move.

• Hubble's Law states that the universe is contracting over time.

• Hubble's Law states that all galaxies are moving towards each other.

What is the relationship between redshift and distance in the universe?

• The greater the redshift, the farther away the galaxy is from us, supporting the idea that the universe is expanding.

• Redshift has no correlation with distance in the universe.

• The greater the redshift, the closer the galaxy is to us.

• Redshift only applies to galaxies that are moving towards us.

What is the Big Bang Theory?

• A theory that explains the formation of black holes.

• The leading explanation about how the universe began, stating that it started from a singular point and has been expanding ever since.

• A hypothesis about the end of the universe.

• A scientific explanation for the existence of life on Earth.

What is dark matter?

• A type of matter that emits light and energy

• A form of matter that is invisible but exerts gravitational effects on visible matter

• A substance that can be seen with the naked eye

• A form of energy that powers galaxies

What does it mean when we say galaxies are moving away from us?

• It indicates that the universe is contracting.

• It means that the universe is expanding, and as a result, most galaxies are receding from Earth, which is observed through redshift.

• It suggests that galaxies are colliding with each other.

• It implies that galaxies are stationary and not changing position.

What evidence supports the Big Bang Theory?

• The existence of dark matter and dark energy

• The cosmic microwave background radiation, the abundance of light elements, and the observed redshift of galaxies.

• The formation of black holes in the universe

• The presence of water on Mars

What does it mean when we say the universe is expanding?

• Galaxies are moving closer together, indicating that the space between them is decreasing.

• The universe is static and does not change over time.

• Galaxies are moving away from each other, indicating that the space between them is increasing.

• The universe is contracting, leading to a collapse of galaxies.

What is a galaxy?

• A massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

• A collection of planets orbiting a single star.

• A large cloud of gas and dust in space that has not yet formed stars.

• A group of asteroids and comets in a specific region of space.

What is the observable universe?

• The part of the universe that we can see and measure, limited by the speed of light and the age of the universe.

• The entire universe including all galaxies and celestial bodies.

• A theoretical concept that describes the universe beyond our current understanding.

• The region of space that is beyond the reach of any telescope.

What is the significance of the redshift in understanding the universe?

• Redshift helps astronomers determine how fast galaxies are moving away from us, providing evidence for the expansion of the universe.

• Redshift indicates the temperature of stars in the universe.

• Redshift is used to measure the distance of stars from Earth.

• Redshift helps in identifying the chemical composition of galaxies.